1. I''ve heard rumblings that Tom may leave.
    我听到风言风语说汤姆要走。

1. 腹鸣：腹部饱胀 abdominal distention ; bloating ; flautulence; meteorism; gassiness | 腹鸣 borborygmus ; gurgling ; growling ; rumbling | 黄疸 jaundice ; icterus

2. 隆隆声：At the time=当时; | rumbling=隆隆声; | something like=有几分象...的;

3.

3. 滚筒清理：rumble 震动;隆隆声;转盘噪声 | rumbling 滚筒清理 | rummage 搜查

4. 鸣动：89 A Rose at Summer's End 夏未的蔷薇 | 90 Rumbling 鸣动 | 91 Burgeoning 萌芽

1. 持续而低沉的声音;隆隆声;辘辘声;咕噜声
    A rumbling is a low continuous noise.

    e.g. ...the rumbling of an empty stomach...
           空空如也的肚子发出的咕噜声
    e.g. Our peace was soon shattered by loud rumblings and explosions like cannon fire.
           我们的平静很快就被炮声之类的巨大轰鸣声和爆炸声给打破了。

2. （情况恶化的）迹象，传闻;怨言
    Rumblings are signs that a bad situation is developing or that people are becoming annoyed or unhappy.

    e.g. There were rumblings of discontent within the ranks.
           士兵怨声载道。

1. a loud low dull continuous noise

    e.g. they heard the rumbling of thunder

    Synonym: rumblegrumblegrumbling

1. continuous full and low-pitched throbbing sound

    e.g. the rumbling rolling sound of thunder

    Synonym: grumbling