liftoff

'lɪftˌɒf

n. the initial ascent of a rocket from its launching pad

n. （火箭发射时）起飞, 启动

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使用频率

liftoff 由 lift（提升）和 off（离开）组成，表示“离开地面”的动作，通常用于飞行器的发射。

例句

1. The rocket achieved liftoff at exactly 10 AM.

火箭在早上十点整成功发射。

2. We watched the liftoff from a safe distance.

我们从安全的距离观看了发射。

3. The countdown ended, and the spacecraft was ready for liftoff.

倒计时结束，航天器准备好发射。