Nrr
[医][=net reproductive rate]净生殖率，净再生产率
🗣️ 情景例句
They're real watches. They tell you the time, don't they?
当然是"真的表"罗。会走也会报时，不是吗？
You'll hurt your arm, if you don't take care.
你不专心的话，就会伤到你的手指。
This is a telephone with a tape recorder.
这是一台带有磁带录音机的电话。