Micropycnometer
微型比重瓶
🗣️ 情景例句
OK, let's take a look.
好了， 让我们来看一看。
Light troubles speak; great troubles are silent.
小困难，大声叫嚷；大困难，闷生不响。
The young man did not wake up until the bed had struck the ground.
那年轻人直到床撞到地上才醒了过来。