吃透英语课本，提升在校竞争力
n. 港湾；河口湾；河口；入海口
复数：estuaries
The fish thrive in the estuary.
鱼儿在河口繁荣生长。
The fishermen sailed into the estuary.
渔民们驶入了河口。
n.[地理][水文]河口；江口
kuala
river mouth
