Quadrivalvate
四裂爿的
🗣️ 情景例句
I turned to him for advice.
我请求他提供高见。
To sink
沉下
It is a harmless bait, but it litters up her desk to such an extent that every time she opens it, loose bits of paper fall out in every direction.
这种习惯无害，只把写字台里堆得满满当当，以致每次打开抽屉总能带出许多纸片四处飞扬。