Metacolizing
铸铁表面渗铝法
🗣️ 情景例句
What do you do?
你现在做什么工作？
How long have you stayed there?
你在那儿住多久了？
He showed that the average individual's sleep cycle is punctuated with peculiar bursts of eye-movements,
他指出，平常人的睡眠周期中不时伴有一阵阵奇怪的眼球队活动，