Constant voltage(power)source

constant ['kɑnstənt]

adj. 不断的，持续的;永恒的，始终如一的;坚定;忠实的; n. [数]常数，常量;不变的事物;永恒值;

con始终+stant站立→始终站着→不变的

I understand, Grandpa.

我能体会你， 爷爷。

That's a very nice jacket.

这件茄克衫真漂亮呀！

Undivided attention is another sign of respect. You may have noticed that very few people listen with complete attention. Most people half-listen, and if you ask them to repeat what you have just said, they cannot. They may appear to be listening, but i

“专一”是尊重对方的另一表现。你也许察觉到很少有人一心一意地听别人讲话。多数人只是半心半意地听。如果你请他们复述你刚才说过的话，他们是不可能复述出来的。他们可能看上去是在听着，但是事实上有许多事情在他们头脑里转来转去--购物清单呀，要做的事呀，令人烦恼的事?2274