Fe
[計] 現場工程師\\n[醫] 鐵(26號元素)
? 同義詞
??? 情景例句
OK.
好的。
Would he have seen you if you hadn't waved to him?
如果你沒向他招手他會看見你嗎？
The comparable speed from the Moon is only 1.5 miles per second.
而從月球出發的相應速度只是每秒1。5英里。