Infrasizing
(粉末)粒度分析
🗣️ 情景例句
My mother promised me a birthday party with a clown.
我妈妈答应给我办一个有小丑的生日派对。
I ought to go to bed now.
我应该现在去睡觉。
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。