英语语法分析

The rates of preoperative inexpectant disease finding decreased.

术前未预期疾病发现率有所降低。

She went through the rountine preoperative tests and spent the rest of the day waiting.

她通过了一些常规的检查, 然后就是等.

Surgeons can do much to avoid complications by the careful preoperative screening process.

外科医生可以在术前进行精心筛选以避免术后并发症。