Ddst
[医][=Denver Development Screening Test]丹佛发育筛选测验：鉴定儿童发育迟缓的测验
🗣️ 情景例句
It's five years ago.
那是五年前了。
Please come a litter earlier.
请早一些来。
My particular experience is largely in oil,
我是专门搞石油的，