减肥好辛苦啊！

Jiǎnféi hǎo xīnkǔ a!

Losing weight is hard work!

早知道有升降电梯就不用走楼梯那么辛苦。

Zǎo zhīdào yǒu shēngjiàng diàntī jiù bú yòng zǒu lóutī nàme xīnkǔ.

If I knew there was an elevator, I would have had to go through the trouble of taking the stairs.

这工作很辛苦。

Zhè gōngzuò hěn xīnkǔ.

This work is really exhausting.