42,648 免费图片适用于学生

生物学动物鱼水下野生动物海上生活海洋水洋西維吉尼亞州

Student workplace

电子计算机图书

Receptionist Woman in Thought

大學生

Home Education

孩子们背景

Microscope science

实验室科学

Pink Petaled Flowers Selective Focus Photography

Toothbrush and Toothpaste

玻璃容器浴室

Hospital Building

建筑物建筑

Pill in a hand

医疗药物药品

Full Bath Bucket

Nail Clipper

工具类银色

Student Girl in a Winter Coat

Student Violence and Bullying

Pill use

医疗药物药品

Student Violence and Bullying

生意人

Bluegill on nest-1

Brook trout-1

Redline darter -2

Bluegill on nest-1

Bluegill-1

Brook trout-1

Rainbow trout-1

Logperch

Woman is Thinking

医疗药物工具类

Dinosaur Fossil

骨骼系統恐龙

(Kendra) Girl is Reading a Book

Angry Medical Doctor

Muscle

医疗药物科学

Seedlings Growing

Badger

野生动物动物

T-Rex

野生动物动物

Threespine stickleback-5

Team surgeon at work on operating in hospital

Team surgeon at work on operating in hospital

medicine

医疗药物医生

Slimy sculpin-1

Several bluegills-2

Brook trout-1

Scientist testing with virus through test tubes. 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”.

医疗药物科学

Torrent sucker

Rainbow trout-3

Juvenile Chinook salmon-2

Team surgeon at work on operating in hospital

Team surgeon at work on operating in hospital

Word Letters

Green Medical Doctor Man

Fish Coy

Red Fish with Big eyes

Rosyside dace-3

The Monterey Bay Aquarium, California. Original image from Carol M. Highsmith’s America, Library of Congress collection.

Male bowfin hides in vegetation-2

Father and Daughter are Bathing

Bluegill on nest-2

Redbreast sunfish-1

Ash Meadows Amargosa pupfish-1

Tiny Fish

Little Boy Child

Oak Tree

Sand Shell

生物学海洋

Mimic shiner-1

Fern foliage

Novel Coronavirus SARS-CoV-2–
This scanning electron microscope image shows SARS-CoV-2 (yellow)—also known as 2019-nCoV, 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”.

Cosmos on Pink

生物学背景

Scientist testing with virus through test tubes. 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”.

Long View of camp Randall in Madison, Wisconsin

Biologists search for Fountain Darter-1

Antares Rocket Set to Launch

外层空间科学

Lima as seen from the International Space Station in Peru

外层空间藍色

Study Student Write

Biologist monitors aquatic plants-2

A scientist demonstrating a lab technique called “candling,” which determines if the egg is suitable for use in growing flu viruses. 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”.

Biologists search for Fountain Darter-1

Hospital Building

建筑物建筑

Hospital Building

建筑物建筑

Woman Teacher Teaching a Lesson at the Blackboard

Bluegill on nest-3

Bluegill on nest-1

Slimy sculpin-4

Bluegill on nest-1

Redbreast sunfish-1

Surgeon Scrubs

Ash Meadows Amargosa pupfish

Bluegill swims in foreground

Bluegill on nest-2

Redbreast sunfish-1

Ash Meadows Amargosa pupfish-1

Black Nose Shark - Carcharhinus acronotus

Dinosaur bone

爬行动物动物

听诊器

医疗卫生医学

开放的圣经

基督教图书

Cedar Tree

(Trevor) Surgery Medical Doctor

Sleeping Student Boy

Tonometer

医疗卫生手

T-ex head

Stop Coronavirus

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