您要查找的是不是：
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- I stood watching for the signal to change to green. 我站着等待交通信号转为绿灯。
- Let's set the clock by the radio time signal. 咱们照着收音机的报时信号把钟对一对。
- A red lamp is often a danger signal. 红灯常常是危险的信号。
- A reflected signal on a communication channel. 一种在通信信道上反射回来的信号。
- The rise in prices was a signal for rebellion. 物价上涨引起了叛乱。
- A channel over which pilot signal is transmitted. 可在其上传输导频信号的一种信道。
- booster signal 提升信号
- The signal was picked up by a downrange radar station. 该信号被试验飞行方向之内的雷达站收到了。
- The Sidewinders were convinced as a morale booster. 响尾蛇导弹不过是用来充当鼓舞士气的工具罢了。
- The driver is winking his lights to signal a turn. 驾驶员打着一闪一闪的灯光信号表示要转弯。
- My win last week is a nice confidence booster. 上周取得的胜利给了我极大的信心。
- Everyone uncovered when the signal sounded. 信号响时，人人脱帽致敬。
- The train must stop when the signal's red. 信号机是红色时,火车必须停驶。
- A red lamp is used as a danger signal. 红灯用作危险信号。
- Our vet is very efficient; he sends us a reminder when the cat is due for a booster vaccination as a matter of course. 我们的兽医工作效率很高，当猫要按时免疫接种时，他总给我们寄一张提醒单来。
- Send out a distress signal; the ship is sinking. 船正在下沉，发遇险信号吧。
- Remove check valve and valve seal from booster. 从倍力器上卸去逆止阀和阀门密封。
- Connect vacuum hose to booster check valve. 连接真空软管到增压器检测阀。
- I corrected my watch by the time signal. 我按报时信号校正我的表。
