学而时习之

Learn and review it from time to time

Is it not pleasant to learn with a constant perseverance and application?

学而时习之，不亦说乎?

Confucius said: Isn't it a pleasure to study and practice what you have learned? 

子曰: 学而时习之,不亦说乎？

Great pleasure is derived from learning and constantly reviewing what has been learned学而时习之，不亦说乎。

The studens in the classroom are all listening to the teacher attentively.

教室里的学生都在认真地听课。

The reading room seems to be always well occupied.

阅览室似乎总是坐满了人。

Many scientific instruments will be at work in the survey.

勘测工作中将使用许多科学仪器。

Playing basketball is one form of physical exercise.

打篮球是体育活动的一种形式。

The students were running around their school.

学生们正围着学校跑步。

Look. I'm playing the zither.

看，我在弹古筝。