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
All set for lunch, Harry.
午餐的一切都准备好了， Harry。
You'll be sick, if you aren't careful.
你不小心的话，就会生病。
Look at this letter from Wang Wei to her penfriend in Australia.
请看这封王伟写给她在澳大利亚的笔友的信。