Pentahydrite
[矿]五水泻盐
🗣️ 情景例句
sleep over Friday and Saturday night
星期五和星期六晚上在那儿过夜
My son wants to get married in June.
我的儿子想要在6月结婚。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。