Translation of "lifetime" into Chinese

I can't think of anything else that's happened in my lifetime that way.

在我一生中除了想这个在也想不到别的事情了。

Furthermore, special clauses are written into contracts for technical equipment that obligate the vendor to support the equipment throughout its usable lifetime.

此外,特殊条款写进技术设备的合同,要求供应商在设备的整个使用寿命期间提供支持。

I don't know but it feels more like an a lifetime has passed.

我不知道,但感觉上好像过了一辈子那么久。