名词
中文翻译：Unknown
同义词：
['straight steel bar', 'plain bar', 'flat steel bar']
例句：
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1. The engineerused a plain steel bar to reinforce the wall.
工程师用一根平直的钢条加固了墙。
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2. The construction workers used plain steel bars to build the bridge.
建筑工人使用平直的钢条建造了这座桥。
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3. The plain steel bar was too weak to support the weight of the building.
这根平直的钢条太弱，无法支撑建筑物的重量。