booster rocket

基本解释

The EKV willimmediately bank sharply to either the right or the left to avoid being hitfrom behind by the booster rocket.
大气层外拦截器(EKV)会立刻向左边或者右边倾斜，以防止被后面的助推火箭撞击到。
You have nothing to fear, for Mars will act like a booster rocket to your career to lead you precisely where you want to go.
你没有什麽好害怕，火星会好像火箭推动器一般，在事业上带你到你想到的地方。
They have some sort of genetic booster rocket and they seem to be functioning better for longer periods of time than centenarians.
他们具有某种遗传助推性而且他们似乎要比百岁老人在更长时期内机能健硕。

B-52 bomber, dropped from the bomber, and then accelerated to Mach 7 by a booster rocket.
ECONOMIST: Hypersonic aviation
Besides containing living quarters, it will carry the booster rocket needed to push the station back into place if it starts to fall out of orbit.
ECONOMIST: Rocket science
Last year, in its most recent test, the X-51 fell for about four seconds before its booster rocket ignited, but the aircraft failed to separate from the rocket and plunged into the ocean.
MSN: Hypersonic aircraft taken out for a trial run on B-52 bomber