Smithite
n. [矿]斜硫砷银矿
🗣️ 情景例句
My final test is worth half my grade.
我的期末考试结果占我总成绩的一半。
To roar
吠叫
They may also have used wood and skins, but these have rotted away.
他们也可能用过木头和兽皮，但这类东西早已腐烂殆尽。