Boron filnment
[机] 硼纤维
🧩 词语组成解析
boron
[['bɔ:rɔn]]
n. 硼\\n[化] 硼B
🗣️ 情景例句
We must prepare ourselves to have a hard time.
我们必须准备过艰苦的日子。
I wasn't serious, I meant it as a joke.
我并非有意，我只是开个玩笑而已。
Who is he?
他是谁？