Manganpectolite
锰针钠钙石
🗣️ 情景例句
I keep in touch with my family regularly.
我定期和家里保持联系。
The pressuer of work was too great for him.
工作压力使他承受不了。
About once a month. Not too often, because neither of us has much time. We both have too much work to do.
大约每月一次。不太经常写信，因为我俩的时间都很紧。我们都有做不完的事。