1.
To signal the approach of; presage.
预报，预示用信号示意（人或事）的临近；预示
2.
signal that one is going to turn/which way one is going to tur
打信号示意要转弯[走哪条路]
3.
The thief signaled (his friend) that the police were coming.
小偷(向他的朋友)发信号示意警察来了。
4.
A railroad signal indicating full speed ahead.
一种示意列车可全速前进的铁路信号
5.
A discharge of a firearm or cannon as a signal or salute.
鸣放鸣放火器或大炮作为信号或表示敬意
6.
wording of signal indication
信号显示用语, 信号显示名称
7.
Signal lights on cars have edged out hand signals.
汽车上已逐渐以信号灯显示取代以手示意的作法。
8.
To signal by waving an upraised arm, a flag, or a light, especially in accordance with a code.
打旗语，用灯光发信号通过摇动举起的手臂、旗子或灯来示意，尤指按符号示意
9.
What do these marks signify?
这些符号表示什麽意思?
10.
The driver's winking his lights; he's turning this way.
司机打着一闪一闪的灯光信号，示意要向这边转弯。
11.
properly observed signal aspect
正确了望到的信号示象
12.
colour video scope
彩色视频信号示波器
13.
The train halted at the signals.
火车依信号指示停住了。
14.
Indicating and recording instruments and annunciating devices.
指示记录仪和信号装置。
15.
continuous cab signal aspect
连续式机车信号示象
16.
emergency position indicating radiobeacon signals
紧急无线电示位标信号
17.
Multiplex Section-Alarm Indication Signal
复用段告警指示信号
18.
electromagnetic signal box diagram
信号楼电磁式表示盘