船长察觉到必须发出求救信号。

The captain found it necessary to send an SOS signal.

youdao

那艘船用无线电发出求救信号。

The ship radioed a call for help.

youdao

轮船上的无线电发出求救信号。

The ship's radio sent out signals for help.

youdao

发出求救信号吧，船正在下沉。

Send out a distress signal; the ship is sinking.

youdao

他们发出求救信号，但是没有得到回应。

They sent out signals for help, but there was no response.

youdao

船搁浅遇险后，船员立刻发出求救信号。

Stranded and in trouble, the crew sent out the S. O. S.

youdao

飞机发出求救信号。

The airplane signaled for help.

youdao

机组人员没有发出任何求救信号。

The crew did not send out any distress signals.

《柯林斯英汉双解大词典》

机组人员发出了求救信号，但没有对问题进行解释。

The crew sent out a distress signal, but there was no explanation of the problem.

youdao

这艘船发出无线电求救信号。

The ship radioed for help.

youdao

它会发出很大声的求救信号，而它的兄弟姐妹会对此做出回应。

It will make a loud distress call, which its siblings answer.

youdao

我们曾收到那架飞机失事前发出的无线电求救信号。

We had picked up radio signals for help from the plan before it crashed.

youdao

失事船只发出了求救信号，请求立即援助?。

The stricken ship sent an SOS for immediate aid.

youdao

失事船只发出了求救信号，请求立即援助?。

The stricken ship sent an SOS for immediate aid.

youdao