名词
中文翻译：主要沟槽
同义词：
['major channel', 'main groove例句：1. The major groove of the tunnel is where the water flows through.（隧道的主要沟槽是水流通过的地方。）']
例句：
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1. The major groove of the tunnel is where the water flows through.
隧道的主要沟槽是水流通过的地方。
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2.The major groove in the road was filled with mud during the rainstorm.
雨中，道路的主要沟槽积满了泥。
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3.The engineer carefully measured the major groove to ensure it would be wide enough for the new road.
工程师仔细测量了主要沟槽，以确保新路的宽度足够宽敞。