精细检查

例句：

1. 1. The engineer examined the machine before it was put into operation.
   工程师在机器投入运行前进行了检查。
2. 2.She examined the report carefully before submitting it to her boss.
   她在提交报告给老板之前仔细检查了它。
3. 3. The scientists conducted an extensive examination of the sample.
   科学家们对样本进行了广泛的检查。