Micropowder
[化] 超细粉
🗣️ 情景例句
Really?
真的吗？
Does it make any difference to you whether we have our lesson at two o'clock or at three o'clock?
我们在两点上课还是在三点上课，你觉得有关系吗？
That's OK.We really need the material.
没关系，我们急着要这些原料。