两小酒窝
1. （落下; 下降; 低落） descend; fall alight; drop-down; build-down; tumble; lapse; descension2. （下降着陆） land; touch down; landingland safely安全降落vertical landing垂直降落forced landing强迫降落free fall自由降落
janniferLEE
词典结果：touchdown[英][ˈtʌtʃdaʊn][美][ˈtʌtʃˌdaʊn]n.触地得分; <空>着陆，降落; 复数：touchdowns例句:1.Flight controllers anticipate clear and calm conditions for touchdown, slated to occurin the martian late afternoon. 飞行控制器需要可见度高、稳定的着陆环境，登陆预定于火星时间傍晚时分进行。 2.However, the landing itself is no problem, and the stall speed of 69 knots means itstouchdown speeds are similar to those of many aircraft with much slower topspeeds. 然而，它的着陆并不成问题，每小时69海里的失速意味着，其着陆速度类似于许多最高飞行速度远低于它的飞机。
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