启动信号：指示开始或启动某个活动或过程的信号。
启动信号
起动信号
出站信号机
开始讯号
开始讯号
... 指示灯display lamp 启动信号starting signal 停车信号cutoff signal ...
... 出站信号 Starting signal 出站信号机 STARTING SIGNAL 出中继电路 OUTGOING TRUNK CIRCUIT ...
... 分组赛：heat 出发信号：starting signal 各就位：Take your marks! ...
Suddenly, the starting signal was given. His mother shouted, Boy, be careful!
突然，出发信号给了，他的妈妈喊道：孩子，小心！
Suddenly, the starting signal was given. His mother shouted, "Boy, be careful!"
突然，出发信号给了，他的妈妈喊道：“孩子，小心！”
The participants are not allowed to touch the tobacco until the starting signal is given.
在开始信号给出前，参赛者不得接触烟草。
Their idealised version of this question was to ask how two signal chemicals, starting from opposite ends of an embryo, could result in a pattern that looked like the French flag (ie, three different coloured vertical stripes).
Health care stocks are starting to perform a little bit better, which may signal that the market is viewing a Republican victory favorably.
FORBES: Q4 Expected Growth Rate Is Low, All Eyes On Quant Easing