My jaw begins to ache from the unaccustomed length of my smile; just for while I'm truly happy.

我不习惯这么长时间的微笑，以至我的下巴都疼了。但是我真的很开心。

youdao

Remaining steady in the face of – and staying separated from — the all-consuming ache will be the journey that allows you to grow from this cyclical human occurrence.

冷静地面对痛苦或者从痛苦走出来的都会让你在这种人之常情中成长。

youdao

Little Owl grows tired, and his wings ache from flying, but Mother gives him the encouragement he needs to fly back home.

小猫头鹰有点累了，因为长时间飞行他的翅膀有点疼，但是猫头鹰妈妈鼓励他一定要飞回家去。

youdao

His legs began to ache from the effort.

NEWYORKER: Among Animals and Plants

One of the biggest risks is the roundworm Toxicara canis which infects dogs and can cause anything from stomach ache to eye damage.

BBC: Pets boost children's health

But regardless of how many displays are hooked up to it, there genuinely are some interface niggles in this OS. Despite having mastered the basic shortcuts, I'm still having to reach for my mouse way too often, and the arm ache is starting to dampen the good vibes left over from my last diary post.

ENGADGET: Windows 8 upgrade diary: multiple monitors make my mouse mad