He gave a signal to his driver to carry on. 他示意司机继续开车。

At the prearranged signal, we all jumped up and shouted ‘Surprise!' 在约定的暗号发出时，我们都跳了出来，大叫一声“惊喜！”

They waved a flag as a signal of distress. 他们摇旗表示求救。

She knew she was sending him mixed signals. 她明白自己发给他的信息自相矛盾。

The election was a signal for the party to rethink its strategies. 这次选举对该党来说是一个需要重新考虑其策略的信号。

In terms of their personal relationships, teachers have to be very careful not to send students the wrong signals. 在个人关系方面，教师要特别谨慎，以免给学生发出错误的信号。

When she told him she was leaving, Bill wasn't surprised – he had read the signals. 她告诉比尔要走时，比尔并不感到吃惊，他早就明白她的意思。

The copper wire carries the electrical signals. 铜丝可以传递电讯信号。

He signalled frantically across the room to his wife. 他冲着屋子对面的妻子猛打手势。

The driver signalled her to cross the road. 司机示意让她过马路。

He flashed his torch to signal that he was ready. 他闪了闪手电筒，示意他准备好了。

The new tax signalled that the government was serious about the environment. 这项新税收表明政府对环境问题是认真的。

Both parties have signalled their determination to win. 两党都已表示出要赢的决心。