求英文翻译：“努力不一定有收获,但不努力就一定没有收获.既然选择了这条路,那就一定坚持把它走完.”谢啦…

Hard-working can't guarantee a destined triumph, without which, however, one shall never succeed. Having chosen his or her own way to success, one shall never give up.

your work is paid unnecessarily，and vice -versa，。。。。。。。。。。。
unnecessarily，未必
vice -versa，反过来也是一样，

Your efforts may not pay off, but if you don't even try, you will get nowhere.Since you have made your choice, just stick to it.

"Hard doesn't have a harvest, but not effort he must not reap. Since chose this way, that must insist that it finish walking."

You may exert a lot with gaining nothing,but if you don't make any efforts you will gain nothing.Since you choose this way,you should carry on and finish it.

Your efforts may not pay off, but if you don't even try, you will get nowhere. Now that you have made your choice, stick it out!

Effort does not mean success,but no effort definitely suggest no gains.Now that we have chosen this way,we should insist on it.

no pains,no gains you have choosen the way you must stick to it!