Hypomedication
皮下投药法
🗣️ 情景例句
She's off today.
她今天休假。
Will you please lock the door when you leave?
请您当你离开时，锁门？
and we know something of the great variety of the sea bed's topography.
而且我们对海底地形的千变万化也有了一定的了解。