I'll say 'One, two, three, go!' as a signal for you to start.

我喊“一、二、三，开始！”作为你开始的信号。

《牛津词典》

Pinocchio answered with another blow, and that was the signal for the beginning of the fray.

皮诺乔回敬了他一下，这就是开始战斗的信号。

youdao

While each box contains a beacon, the unit only has enough battery power to transmit a signal for 30 days.

虽然每个盒子里都有一个信标，但这个装置的电池只能够传输30天信号。

youdao

The explosion was a signal for all Confederate guns surrounding the fort to open fire.

VOA: special.2009.08.13

Estrogen is a natural signal for cells to grow.

雌激素是一类细胞生长信号

耶鲁公开课 - 生物医学工程探索课程节选

It's a natural signal for cells to grow.

它能够促进细胞生长

耶鲁公开课 - 生物医学工程探索课程节选

And the consensus of our technical indicators remains on our latest buy signal for gold.

FORBES: You Still Have Time To Buy Gold

"Prices are a signal for all of the resources that go into producing something, " he says.

FORBES: The Guilt-Free Consumer

Debt in Europe is however a strong signal for economic mismanagement on an unprecedented scale.

FORBES: Europe's Disintegration: It's Not About the PIIGS or the Euro