This is it's real value: Speed to do a quick-and-dirty check.

其价值在于快速检查。

youdao

Clean, adjust relief valve -, check for worn and dirty valve.

清洁，调节安全阀，检查是否有磨损和肮脏的阀门。

youdao

Clean, adjust relief valve -, check for worn and dirty valve.

清洁，调节安全阀，检查是否有磨损和肮脏的阀门。

youdao