43,827 免費圖片適用於學生

生物學魚水下海上生活動物水野生動物海洋學校團體

Pigeon

Brontosaurus

scientist doing research in a quantum optics lab

香港中學生首次自發罷課 (3)

香港中學生首次自發罷課 (10)

香港中學生首次自發罷課 (7)

Medical Doctor Woman with X Sign

Female Student Points Her Finger

Business Woman is Writing

Woman doing chores in bathroom, cleaning of water tap

工具類廚房

香港中學生首次自發罷課 (9)

Female student sports day

Female student

Cyprinella callistia

Novel Coronavirus SARS-CoV-2–Transmission electron micrograph of SARS-CoV-2 virus particles, isolated from a patient. Original image sourced from US Government department: The National Institute of Allergy and Infectious Diseases. Under US law this image is copyright free, please credit the government department whenever you can”.

Dinosaur Skeleton

Students laptop computer

Biologists search for Fountain Darter

生物學家水

Luxilus chrysocephalus isolepis-6

Diamondback terrapin

爬行动物動物

Biologists search for Fountain Darter-2

生物學家水

Biologists search for Fountain Darter-2

生物學家水

Influenza virus experimentation with eggs. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

A scientist using a whole genome DNA sequencer, in order to determine the “DNA fingerprint” of a specific bacterium. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

生物學控制

Blue Tech Background

Blue catfish-4

Rainbow trout-1

Young bluegill close-up

Sockeye salmon-2

Okaloosa darter-1

Okaloosa darter-1

Virginia River Spinedace

Ash Meadows Amargosa pupfish-2

Rainbow trout in stream

Biologists search for Fountain Darter-2

生物學家水

Biologists search for Fountain Darter-1

生物學家水

Panama City crayfish-2

生物學水下

Students at Maclay School in Tallahassee, Florida

Student recreation center

建築物城市

A photomicrograph reveals numerous Gram–negative, Francisella tularensis coccobacilli, the bacterium responsible for causing the disease, tularemia. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

電子學细菌

Greenery green space skyscraper

香港中學生首次自發罷課 (4)

香港中學生首次自發罷課 (13)

香港中學生首次自發罷課 (14)

香港中學生首次自發罷課 (6)

Novel Coronavirus SARS-CoV-2–This scanning electron microscope image shows SARS-CoV-2 (round gold objects) emerging from the surface of cells cultured in the lab. SARS-CoV-2, also known as 2019-nCoV, is the virus that causes COVID-19. Original image sourced from US Government department: The National Institute of Allergy and Infectious Diseases. Under US law this image is copyright free, please credit the government department whenever you can”.

Puzzled Medical Doctor

Medical Doctor Woman

Surgery Medical Doctor

Pallid Sturgeon-2

Appalachian elktoe mussel on the stream bottom

生物學水下

Blue catfish

Logperch-1

Rough Scad Fish

食人魚

Seamless Chinese Pattern

Sea lemon

奧勒岡州生物學

Divers photographing a paddlefish

Yellow perch-4

Okaloosa darter-1

Bluegill and other school of fish

A medical illustration of clindamycin–resistant group B Streptococcus bacteria. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

Transmission electron microscopic (TEM) image highlights the particle envelope of a single, spherical shaped, Middle East respiratory syndrome coronavirus (MERS-CoV) virion. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

Test Tubes

Ash Meadows Amargosa pupfish-1

Carassius auratus-2

Juvenile Northern Pike

Teacher in Class

孩子們學校

競賽游泳古老的

海洋動物魚

Student Girl Rides a Bicycle

騎自行車的人腳踏車

A boy and a snowman playing hockey

聖誕節天時冷

Pallid Sturgeon-4

Shorthead redhorse

Smallmouth bass

野生動物魚

Female Student with English Textbook

Flounder Face

Boy with a Quiz

Boy in Art Club

Safety Razor

香港傘運學生領袖回應判決 03

香港大學校長馬斐森進入校委會會議前與抗議的學生會代表交談

香港學民思潮宣佈926中學生罷課安排 (6)

Couple of Students

Test Tubes

Healthcare workers donning a pair of protective goggles and protective equipment. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

香港中學生首次自發罷課 (8)

Praying Mantis

School boy

聖誕節學校

School boy

孩子們學校

School boy

孩子們學校

School boy

孩子們學校

School boy

孩子們學校

School boy

孩子們學校

school boy

孩子們學校

Girl is Thinking

Student Girl Waving Hello

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