I've learned the hard way — forget you, give up you.

我已经学会那条艰辛的道路——忘记你，放弃你。

youdao

I've learned the hard way. Never let it get that far.

我已经明了那段路程。不再让它那么遥远。

youdao

I've learned the hard way So never let it get that far.

我知道痛苦的滋味却绝不会轻易去体会。

youdao

"I guess they say you learn the hard way, and today I've learned the hard way, " said Reade.

CNN: France win BMX gold as Briton Reade crashes

"I've learned the hard way that quitting a habit as addictive as smoking is a constant struggle, " the Brooklyn Democrat said.

WSJ: Bloomberg Sets New Anti-Tobacco Push