Mecalix
切削力测定仪
🗣️ 情景例句
She's come up with a new idea for increasing sales.
她想出了增加销售量的主意。
Keep your body clean!
身体要常保持清洁。
it is quite reasonable to regard the sea floor as the basic form of the crust of the earth,
因此完全有理由把海床看作地壳的基本模壳，