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- Water is purified by passing through rock. 水在穿透岩石的过程中获得了净化。
- 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。
- Water can be purified by filtration through sand. 水通过沙滤可以变清。
- 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。
- 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 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。
- 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。
- The soil has to is purified of all bacteria. 要消灭这土壤的所有细菌使之净化.
- Send out a distress signal; the ship is sinking. 船正在下沉，发遇险信号吧。
- The air in the room was purified. 房间的空气得到了净化。
- I corrected my watch by the time signal. 我按报时信号校正我的表。
- A decrease in signal power as measured between two points. 信号能量在两点间测量出来的减小量。参阅signal。
- Souls are so purified in purgatory. （天主教教义中）人的灵魂将在炼狱中得到净化。
