"signal for" in Chinese (Simplified)
示意...给...发信号
Definition
用手势、声音或动作表示某事应该开始或发生，或给某人发信号去做某事。
Usage Notes (Chinese (Simplified))
多用于发出手势、灯光等明显动作，常跟具体动作连用，如“signal for help（示意求助）”。不要与“signal to”混淆，后者多接人。一般正式程度中性。
Examples
He waved to signal for a taxi.
他挥手来**示意**出租车。
Please signal for help if you need it.
如果需要，请**示意**寻求帮助。
The referee will signal for the match to begin.
裁判会**示意**比赛开始。
She caught my eye to signal for me to come over.
她对我使了个眼色，**示意**我过去。
Let’s wait until he signals for us before we leave.
我们等他**示意**我们再离开。
The lights flickered to signal for everyone to be quiet.
灯光闪烁，**示意**大家安静。