The vertical take-off of a spacecraft, rocket, or helicopter.
（宇宙飞船，火箭，直升飞机）升空，发射，起飞（尤指垂直起飞，升空或发射）
Example sentencesExamples
Two days and counting until lift-off for the Space Shuttle Discovery.
The first stage has provided the initial lift-off.
Another helicopter and a C - 130 transport plane collided in the nighttime lift-off.
After some scenes of preparing for the next launch, we see the lift-off as well, sticking with the shuttle well past the separation of the solid rocket boosters.
At lift-off, the inner envelope is only filled to 6% of its total volume.
The next two lift-offs occurred around the 17th.
Now the former England Under-21 is hoping his goal and City's triumph will mark an overdue lift-off for both himself and the club.
He is preparing for lift-off on Thursday 25 April in a Russian Soyuz spacecraft on a mission codenamed Marco Polo that will replace the emergency rescue vehicle for the resident crew.
Approximately 75 minutes after lift-off, when separation from the launcher is confirmed, the ATV becomes a fully automated spaceship.
The satellite is to be injected into a Geosynchronous Transfer Orbit about 17 minutes after the lift-off.
To be awarded the honour of being a European City of Culture has been a great success for some such as Lille, who used it as a lift-off to greater things, but for so many it has meant nothing, or at least has lacked any lasting influence.
If all goes well with the test, the countdown will continue to a lift-off at 16: 39 CEST on Tuesday.
Discovery's journey, which began with a lift-off on July 26, spanned 219 orbits of Earth and 5.8 million miles.
Less than 10 minutes after lift-off the payload parachuted safely back to Earth, and the suborbital flight was over.
After lift-off, the heavy weight will result in a relatively slow acceleration to the speed for best angle of climb.
Such movements up the ladder create a lift-off of understanding, an effect some writers call ‘altitude.’
When asset valuations are very low, stock prices do not tend to fall easily and bull market lift-offs can be very violent when they do arise.
The lift-off took place with a Disco at Tramore Racecourse and ninety teenagers supported the fund raising venture and thoroughly enjoyed themselves without the merest hint of a hiccup.
The launch timing is dictated by both the position of the space station and NASA's desire to hold a daylight lift-off so it can photograph the spacecraft during its climb to orbit and watch out for possible damage.
In contrast, in the sixth trial, the force and force rate functions observed for the two cubes were similar prior to lift-off, and lift-off occurred at about the same time.