ตัวอย่าง:
A scientist would need a very strong microscope to examine the 80-100 million cells found in any human brain. 
The Noun Project
ทะเบียนรูปถ่าย:
CC: Attribution, การใช้ในเชิงพาณิชย์
Regionalism:
Neutral
Regional variant:
Neutral
Full Expression:
Scientific Instruments: microscope
This instrument is used by scientists to observe tiny details that the human eye cannot see.