您要查找的是不是：
- The children were playing in the sand pit. 孩子们在沙坑中玩耍。
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- Many coal-miners were imprisoned in a pit accident. 在一次塌方事故中，许多矿工被压在了井下。
- The managers want to pit the champion against John. 经理人想让冠军与约翰比赛。
- 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。
- The managers want to pit the champion against an unknown. 经理们想让冠军与一名未成名的选手比赛。
- A red lamp is often a danger signal. 红灯常常是危险的信号。
- A hole or pit, especially one in a road surface. 坑洞尤指路面上的涡穴或坑洞
- 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。
- 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。
- Don't believe what he says. He's trying to dig a pit for you. 不要相信他的话。他在算计你。
- Everyone uncovered when the signal sounded. 信号响时，人人脱帽致敬。
- He felt an aching feeling in (the pit of) his stomach. 他胃疼。
- 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。
- Send out a distress signal; the ship is sinking. 船正在下沉，发遇险信号吧。
