Boleite
[機(jī)] 銅鉛礦
??? 情景例句
This place is a pigsty.
這地方像個豬圈。
She seems fond of him.
她似乎喜歡他。
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一個人站在公共汽車或火車上，當(dāng)車突然開動時，他為什么會傾倒呢？