Mels
[医][=mean life span]平均寿命
🗣️ 情景例句
If you are going to insist, then just do it.
如果你想坚持，那么就坚持到底。
This man digs foundations for skyscrapers.
这个人在挖着高层大楼的地基。
he identifies himself with its centre of gravity, its mass, its weight;
他把自身和物体重心、质量、重量融为一体。