Silaonite
杂硒铋矿
🗣️ 情景例句
I really mean it.
当然是真的。
I hope you can accept my offer.
我希望你能接受我的建议。
A young English writer made the pertinent observation a year or two back
一两年前，一位年轻的英国作家发表了中肯的看法。