Can be transferred to children unconditionally, right of life, but not in vain efforts.

可无条件将经营权转让给子女，一生的努力不致白费，而且免税。

youdao

They beheld Madeleine, almost flat on his stomach beneath that terrible weight, make two vain efforts to bring his knees and his elbows together.

大家看见马德兰几乎平伏在那一堆骇人的东西下面，两次想使肘弯接近膝头，都没有成功。

youdao

But this is a better way to win the argument against Hamas than the past year's vain efforts to make the Palestinians jump through verbal hoops they have come to consider humiliating.

但相对于过去这些年里的徒劳无功，这已是赢得民众反对哈马斯的更好方法了，巴勒斯坦人也可以籍此跳出他们已经感到羞辱的口头圈套。-翻个大概，不对只能等Frank改了。

youdao

Before the crisis, vain efforts were made to encourage local banks to merge.

ECONOMIST: Banking in Malaysia: Next in line? | The

Tiffin fought back to close the gap from a three-quarter length to just three feet towards the end of the race but their efforts were in vain.

BBC: Redgrave stars at Henley

But his efforts were in vain as his side lost their last five wickets for 17 runs, with Sujeewa de Silva and off-spinner Thilan Samaraweera claiming four wickets apiece.

BBC: Clean sweep for Sri Lanka