touch down
phrasal verbtouch down
(of a plane, spacecraft, etc. 飞机、航天器等 to make contact with the ground as it lands 着陆；降落 The helicopter touched down on the helipad. 直升机降落在直升机停机坪上。
- (of a tornado)
to make contact with the ground 着陆；降落 (in rugby 橄榄球 to score a try by putting the ball on the ground behind the other team’s goal line （在对方球门线后）持球触地得分；达阵