Yeah. They wouldn't hesitate, not for a second.

他们一定会毫不迟疑地答应。

Not for a second. - Yeah, hit my mark and say my line.

完全不信。- 对，站到我的位置，说我的台词。

You don't believe that, not for a second.

你一点都不信是这样的。

They didn't for a second imagine that they could take their troubles to us, or expect us to nurture them.

他们一秒钟也没有想到他们可以把麻烦交给我们，或者期望我们来培养他们。