Naumannite
硒银矿
🗣️ 情景例句
It's a perfect day for a walk.
这可是一个散步的好天气。
Idleness is the key of beggary, and the root of all evil.
懒惰是行乞的敲门砖，是万恶的根源。
Is this the man that you served, Caroline?
卡罗琳，这就是你接待过的那个人吗？