Trechmannite
轻硫砷银矿
🗣️ 情景例句
I'm afraid not. We don't generally accept a letter of credit.
恐怕不行，我们一般不采用信用卡。
Many receive advice only the wise profit by it.
聆忠言者众，智者独获益。
there is no evidence that the total amount of activity is any less.
但没有迹象表明，其活动总量有任何减少。