单词 "mouth" 的含义和用法如下？
1. 嘴巴：人体器官，用于进食、说话和呼吸。
He opened his mouth wide.
他张大了嘴巴。
2. 出口：某个物体的开口部分。
The mouth of the river is wide and deep.
河口的宽度很大，深度也很深。
3. 起始处或起点：用于描述某个过程或线路的开始。
The mouth of the street is crowded with people.
街道的入口处人潮拥挤。
4. 比喻性的用法：用于描述某个物体的形状或特征类似嘴巴。
The bowl has a wide mouth and a narrow base.
这只碗口宽底窄。
以下是一些与 "mouth" 相关的固定搭配词组：
1. mouthpiece：吹嘴，乐器上的吹奏部分；代言人，发言者。
The clarinet has a long mouthpiece.
单簧管有一个长长的吹嘴。
2. mouth-watering：令人垂涎的，形容食物等诱人的事物。
The mouth-watering aroma of roasted chicken filled the air.
烤鸡诱人的香气弥漫在空气中。
3. mouth to mouth：口对口，表示亲密接触或相互模仿。
They were seen kissing mouth to mouth in public.
他们在公共场合亲吻，亲密无间。
4. mouth off：说话无礼或抱怨。
He always mouths off about his coworkers behind their backs.
他总是在背后抱怨同事。
5. mouthful：满口的食物或饮料。
She took a big mouthful of ice cream and closed her eyes in pleasure.她舀了一大口冰淇淋，闭上眼睛享受美味。
6. mouthwash：漱口液，用于清洁口腔。
She rinsed her mouth with mouthwash after brushing her teeth.
刷牙后，她用漱口液漱口。
7. mouth organ：口琴，一种乐器。
He played a beautiful melody on his mouth organ.
他用口琴演奏了一首美妙的旋律。
