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Science (General)
Part 14
Part 15
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采
集
cǎi
jí
to gather, to collect, to harvest
重
心
zhòng
xīn
center of gravity, central core
频
率
pín
lǜ
frequency
饱
和
bǎo
hé
saturation
验
证
yàn
zhèng
to inspect and verify