everyday concept

例句：

1. 1. The teacher explained the concept of gravity to the students every day.
   老师每天向学生们解释重力的概念。
2. 2.The concept of sustainable development is crucial for our future.
   可持续发展的概念对于我们的未来至关重要。
3. 3. The everyday concept of time is that it passes quickly and we must make the most of eachmoment.
   日常概念中的“时间”是它快速流逝，我们必须充分利用每一分钟。