Kollag

固體潤滑劑

??? 情景例句

If you educate the public about dangerous diseases they can protect themselves, which will help to halt the spread.
如果你能教育公眾如何來防治危險疾病,他們就能夠保護好他們自己,從而阻止疾病的傳播。
Know something of everything and everything of something.
既要有一般常識,又要有專業知識。
How many musicians are you bringing?
你打算帶多少樂師來?
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KOH [k?u]
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