Word
liftoff
升空;起飞;发射
核心释义
the initial ascent of a rocket from its launching pad
- 1.
火箭或飞机发射时离地的瞬间。
The point in the launch of a rocket or an aircraft where it leaves contact with the ground.
- 2.
火箭从发射台初始升空
the initial ascent of a rocket from its launching pad
- 3.
人或动物(如跳跃时)离地的瞬间。
The point at which a person or animal leaves the ground, as for example when jumping.
- 4.
启动成功或行动的起点。
The point of launching into success or action.
火箭或飞机发射时离地的瞬间。;火箭从发射台初始升空;人或动物(如跳跃时)离地的瞬间。;启动成功或行动的起点。;(火箭发射时)起飞
用法In use
Liftoff occurred exactly at 9:30 a.m., and the rocket rose into the sky.
用法提示:此处 liftoff 是名词,作主语,指火箭从发射台升空的时刻。
The entire team held their breath during the liftoff of the new satellite.
用法提示:liftoff 是名词,在介词 during 后,后接 of 短语指明发射的对象。
Mission control delayed the liftoff due to high winds.
用法提示:liftoff 作动词 delayed 的宾语,指发射升空这件事。
the liftoff of [noun]
liftoff 是名词,常用 of 引出发射的运载工具。
The liftoff of the rocket was delayed by strong winds.
火箭的升空因强风而推迟。
at liftoff
at liftoff 表示“在升空时”,用作时间状语。
相关词与表达Connections
搭配Collocations
- scheduled liftoff
- 预定发射
- The scheduled liftoff was delayed by bad weather.预定发射因天气恶劣而推迟。
- liftoff time
- 发射时间
- The liftoff time has been set for 9 a.m.发射时间已定在上午9点。
- liftoff sequence
- 发射程序
- Engineers checked the liftoff sequence one last time.工程师们最后一次检查了发射程序。
- smooth liftoff
- 顺利升空
- The rocket had a smooth liftoff from the launchpad.火箭从发射台顺利升空。
- minutes before liftoff
- 发射前几分钟
学习提示Learner notes
记忆技巧Memory Tip
把 liftoff 拆成 lift(举起)+ off(离开):火箭被发射台“举起”后“离开”地面,就是升空。
语境与语域Context & Register
语域:neutral 常见场景:航天/火箭发射、新闻报道、技术说明 liftoff 通常用于航天或火箭发射场景,指火箭离开发射台的初始上升动作,也见于新闻报道或技术说明中。日常口语中较少用,更常说 launch 或 takeoff。
发音与拼写Pronunciation & Spelling
在给定发音 /ˈlɪfˌtɔf/ 中,结尾 /tɔf/ 与 off、cough(美音)、toff、scoff 的 /ɔf/ 同韵。注意拼写近似的 lift /lɪft/ 和 toffee /ˈtɔfi/ 读音不同。
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.