名词
中文翻译：主梁
同义词：
['main spar', "main beam例句：1. The ship'smain spar was damaged in the storm.（风暴中船的主梁受损。）"]
例句：
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1. The ship'smain spar was damaged in the storm.
风暴中船的主梁受损。
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2. The constructionof the bridge required the use of alarge main spar.
建造大桥需要使用大型主梁。
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3. The boat's mainspar is visible through the water.
通过水面可以看到船的主梁。