1.

1. The brook warbled over its rocky bed.
    小溪潺潺流过多石的河床。

2. Larks were warbling high up in the sky.
    云雀在高空鸣唱。

1. 鸟叫,禽鸣：rifle 来复枪, 步枪 | warble 鸟叫,禽鸣 | marble 大理石

2. 颤音：war neurosis 战争神经症 | warble 颤音 | warble technique 颤音技术

3. 鸟鸣：war-horse 军马 | warble 鸟鸣 | warbler 鸣鸟

4. warble的解释

4. 牛皮蝇幼虫：wandering cell 游走细胞 | warble 牛皮蝇幼虫 | warble fly disease of cattle 牛皮下蝇蛆病

1. (鸟)啭鸣，啁啾
    When a bird warbles, it sings pleasantly.

warble在线翻译

    e.g. The bird continued to warble...
           鸟儿继续啁啾。
    e.g. A flock of birds was already warbling a cheerful morning chorus.
           一群鸟儿已经齐声唱起了欢快的晨曲。

2. 用颤音唱
    If someone warbles, they sing in a high-pitched, rather unsteady voice.

    e.g. She warbled as she worked.
           她边工作边用颤音唱歌。
    e.g. ...singers warbling ''Over the Rainbow''.
           用颤音唱《彩虹彼端》的歌手们

3. (电话等)发出颤音
    When machines such as telephones warble, they make high-pitched sounds.

warble

    e.g. The telephone on his desk warbled.
           他桌上的电话叮铃铃响了。

1. a lumpy abscess under the hide of domestic mammals caused by larvae of a botfly or warble fly

1. sing by changing register
    sing by yodeling

    e.g. The Austrians were yodeling in the mountains

    Synonym: yodeldescant

2. sing or play with trills, alternating with the half note above or below

    Synonym: trillquaver