一旦通过所有测试，任务也就完成了。

When all the tests pass, the task is complete.

youdao

一旦通过门也能从里面打开。

Once through, the door can also be opened from the inside.

youdao

一旦通过全部单元测试，代码也就完成了。

The code is "done" when all of the unit tests pass.

youdao

It sends it's signal, it's signal - the signal that it sends is this change in voltage, and once it changes, maybe it's all done.

它发出信号,它通过电压的改变发出信号,然而一旦电压改变,细胞的使命到此就终结了

耶鲁公开课 - 生物医学工程探索课程节选