效率

這餐廳的服務一點效率也沒有。

The service in this restaurant is none too fast.

这些学生很努力，但效率不太高。

這些學生很努力，但效率不太高。

These students work hard, but it's not that much efficient.

我们优化了数据库索引，结果系统效率提高了50%。

我們優化了數據庫索引，結果系統效率提高了50%。

We have optimized the database indexing, and as a result, system efficiency has improved by 50%.

你們的效率太低了。

It is inefficient of you.