Picnometer

n. 比重瓶

??? 情景例句

Not to worry.
別擔心。
He that has a tongue in his head may find his way anywhere.
遇事多問，隨處可行。
I have a surprise for you.
我有一個意想不到的東西給你看。
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?? 更多 P 開頭的單詞

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