The outside interferes with making PLC receive the wrong signal, cause the lathe to act by mistake, or make the internal data of PLC lost, even make the system out of control when being serious.

外部干扰可能使PLC接收到错误的信号，造成机床误动作，或使PLC的内部数据丢失，严重时甚至使系统失控。

youdao

Courage is when everyone else is being especially serious, you suddenly remembering a silly joke and trying not to giggle.

勇气，是在别人都特别严肃的时候，你突然想起一个好傻的笑话，却能忍住不傻笑。

youdao

Oh, I don't. They don't seem to take anything seriously. You never know when they are joking and when they are being serious.

我不喜欢。他们好像对什么都不认真。你永远都不知道他们什么时候是在开玩笑，什么时候是认真的。

youdao

Usually, a person is clowning around if he is being funny when he should be serious.

VOA: special.2009.01.11

Of course, being able to get a message out via Tweet is a little easier when you have serious influence.

FORBES: The Kevin Smith - Southwest Airlines tweet battle (And why you should be on Twitter too)

But in the autumn of 1919, when the League was being discussed in the American Congress, Wilson had yet another stroke, more serious than the earlier ones.

ECONOMIST: Edwin Weinstein | The

So when European leaders tell Israelis that we need to convince them we are serious about peace, they aren't being serious.

CENTERFORSECURITYPOLICY: Netanyahu's time to choose