trough

名词复数：troughs

同义词：

ditch | outlet | cup | manger | gutter | crib | rack | holder | channel | furrow | trench | drain | depression | low | low pressure area | till | bowl | public treasury |

反义词：

crest |

词义辨析：

同义参见:

outlet

cup

ditch

反义:

n.(两浪之间的)凹处

crest