We had a smooth flight.

我们的飞机飞得很平稳.

《现代汉英综合大词典》

Finally, we landed safely. It was a smooth flight.

终于, 我们安全地登陆了. 它是平稳的飞行.

互联网

Not when it's a smooth flight.

飞行平稳的时候我不晕.

互联网

The weather forecast is good, and we're expecting a smooth flight all the way.

预报的天气很好, 我们可望全程飞行平稳.

互联网