- 释义：
- n. 降落，着陆
- 例句：
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The crowd yelled when the hometown team scored a touchdown.
当他们自己的队得了底线分时,人群高声呼喊起来.
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The Tigers broke the ice with a touchdown.
虎队首先底线得分,打破僵局.
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Controlled land landing also demanded some way to cushion touchdown impact.
定点控制着陆还要求解决着陆时所产生的强大冲力问题.
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