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
When he came to the States five years ago, he had only forty dollars in his pocket.
五年前他来美国时，口袋里只有40美元。
Let's stop discussing trivial details and come to the point.
咱们别再谈琐碎细节了，说正事吧。
Whose is this watch?
这块表是谁的？