美国航空航天局计划在周二发射演示火箭，但是计划被肯尼迪太空中心上空密布的云层和一艘在发射警戒区域四处游逛的船所打乱。

NASA planned to launch the demo rocket on Tuesday but was stymied by cloudy skies over the Kennedy Space Center and by a boat that wandered into the launch danger zone.

youdao

我看到有人游到了一艘沉没的海盗船残骸附近(为了演示，溺水的选项被关掉了)，能看到鱼群和很棒的游泳动画。

I caught a glimpse of someone swimming around the wreckage of a sunken pirate ship (they had turned off drowning for the demo) with fish and great swimming animations.

youdao

该逆风车质量轻且演示效果好，可以代替逆风船做逆风行舟的演示实验。

And this vehicle has advantages of small mass and good demonstration effects, so it can take the place of the headwind-going boat in the demonstration of boat going headwind.

youdao

该逆风车质量轻且演示效果好，可以代替逆风船做逆风行舟的演示实验。

And this vehicle has advantages of small mass and good demonstration effects, so it can take the place of the headwind-going boat in the demonstration of boat going headwind.

youdao