Bortam
[冶]硅硼钛铝锰合金
🗣️ 情景例句
If you go camping, at night you'll hear all the nocturnal animals.
如果你去野营，晚上可以听到动物的夜歌。
I often study in the morning.
我常常在早上读书。
Mentally, at least, most of us could compile formidable lists of 'dos' and 'don'ts'.
至少在大多数人的心里会编排出一份“应做什么”和“不应做什么”的令人生畏的单子。