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1. The engineer used a special tool to make the button spot weld stronger.
工程师用一种特殊工具使按钮焊接点更牢固。
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2. The car's body was spot welded together, making it more durable.
汽车车身是用焊接点连接在一起的，使其更耐用。
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3. The construction workers were working on the spot welding the metal beams together.
建筑工人正在现场焊接金属梁，将它们连接在一起。