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Useful Memory Trick:
公式 ("gong1 shi4"- formula; any established or conventional method; expressions...):
In order for any <formula> in math or physics to be valid, it must be published in a public(公) style(式) subject to peer review.
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User: bertus

Age: 57, Male
Location
Country:
China
State/Province:
Guangdong
City:
Guangzhou
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Native Language: Dutch
Other Languages Spoken: English
Currently Studying: Chinese-Simplified
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