The lifespan of the Monarch is only two months (once full grown).

这种蝴蝶的寿命只有两个月（从完全长成后算起）。

youdao

Steven: Peter isn't old enough to feed himself. He's only two months old.

史蒂文：彼得太小了，还不会自己吃呢，他才两个月。

youdao

Only two months later, a month after they were married, Carmen Elcira learned she was pregnant.

这之后仅仅两个月，也就是婚后一个月，卡门·艾尔茜拉发现自己怀孕了。

youdao

And with only two months left and numerous hurdles remaining, questions are being raised about whether nations can narrow their differences in time.

VOA: standard.2009.09.28

"Only married two months and she has her head turned already to leave!

VOA: special.2009.06.27

If,in the best-case scenario, that may only take two to three months.

VOA: standard.2009.04.28

Winter lasted only two months a year, and our family turned quite British for this season.

NPR: In The Kitchen With Madhur Jaffrey

Congress extended the cuts in payroll taxes and unemployment benefits for only two months.

FORBES: NRF Expects Retail Sales To Rise 3.4% in 2012

Only two months ago, Mr Covas looked doomed: opinion polls put him in fourth place.

ECONOMIST: Brazil