... give a signal 发信号make a signal发信号 signal of distress 遇难信号; 船只失事信号 ...
双语例句
1
It can and should makeasignal educational contribution.
它能够也必将作出显著的教育上的贡献。
2
You can makeasignal device if you have something with shiny surface.
如果你有表面发光的物体,就可以做一个信号装置。
3
As these experiments show, begging apparently provides asignal of need that parents use to make judgments about which offspring can benefit most from a feeding.