Richetite
铅铀矿
🗣️ 情景例句
Please accept our apologies.
请接受我们的歉意。
Does it make any difference to you whether we have our lesson at two o'clock or at three o'clock?
我们在两点上课还是在三点上课，你觉得有关系吗？
He is my age.
他和我同岁。