英汉词典

signal 相关例句

及物动词

1. A period signals the end of a sentence.
    句号表示一个句子结束了。

不及物动词

1. signal是什么意思

1. The teacher signalled to the boy to begin.
    老师向那个男孩做手势，叫他开始。

名词

1. A red lamp is used as a danger signal.
    红灯用作危险信号。

2. The railway signal showed that the train could pass.
    铁路的信号标志显示火车可以通过。