Short lifetime means uncertain mass.

短寿命意味着质量不确定。

youdao

Leaving home is one of the hardest things I've ever had to do in my short lifetime.

离开家是我曾经在短暂的生命里做的最艰难的决定之一。

youdao

"Because black carbon has a short lifetime, if you can remove it, you can have a fast climate impact," Jacobson said.

“因为黑碳寿命很短，一旦将其消除，就可以迅速对气候产生影响，”雅各布森说。

youdao

He influenced the direction of jazz music during his short lifetime.

VOA: special.2009.05.03

Burns's fame, already considerable during his short lifetime, became a cult after his death.

WSJ: Robert Burns and Auld Lang Syne at the Morgan Library & Museum

In its relatively short lifetime, abstract art has been illuminated (and obscured) by two influential critical attitudes.

ECONOMIST: 20th-century art

Or might his party, for the third time in his short parliamentary lifetime, dump its leader?

BBC: Lords reform looks set to snarl up the Commons