Polyborane
聚硼烷
🗣️ 情景例句
I am calling on behalf of the Private Teacher Company.
我代表家教公司给您打电话。
Say well is good, but do well is better.
说得漂亮固好，做得漂亮更佳。
'Certainly,' the girl said, 'but they're for next Wednesday's performance.
“当然可以，不过这两张票是下星期三的，