Dilvar
迪尔瓦镍铁合金
🗣️ 情景例句
Tell me about your book.
谈谈你的书吧。
Desperate diseases must have desperate cures.
毒病要用毒药医。
This continental slope usually starts at a place somewhere near the 100-fathom mark
一般是从差不多100英寻水深的地方开始的，