对数表

例句：

1. 1. The engineer used a log to measure the depth of the river.
   工程师用测绳测量河流的深度。
2. 2. The scientist kept a log of all his experiments.
   科学家记录了所有实验的日志。
3. 3. The firefighters used logs to build a makeshift shelter.
   消防员使用木柴搭建了一个临时避难所。