无故的英文：
without reason

An unreasonable delay
无故延误

She is never absent from work without good cause.
她决不无故缺勤.

"He that is angry without a cause, must be pleased without amends"
不要给无故生气的人赔不是

In no circumstance is it allowed to deduct or delay the payment.
不得克扣或者无故拖欠劳动者的工资。

He is strongly opposed to giving casual holidays.
他坚决反对无故临时放假。

I imagined it was some importunate person whoDI beg you will excuse me
我还以为是什么人无故前来纠缠，望勿见怪。

He often cut recitation during his college days.
他上大学时经常无故旷课，逃避背诵练习。

As the bird by wandering, as the swallow by flying, so the curse causeless shall not come.
麻雀往来，燕子翻飞，这样，无故的咒诅，也必不临到。

The train stopped unaccountably; shortly afterward a ticket inspector began; the inspector's face was vaguely familiar
列车无故停驶，不一会儿又开始查起票来，查票人的脸有些眼熟。

"If you kept me for no reason, it would do you no good and would break up my family."
"如今无故平空留下我,于你又无益,反叫我们骨肉分离"

with or without milk,with or without sugar.
有人愿意在茶中加奶，有人却不愿意有人爱加糖，有人却不爱加糖。

without [with no]stint
无限制地,不吝惜地

"Without money, without tear"
没有钱,就没有忧虑

Love rules without a sword and bind without a cord.
爱的统治不用刀枪，捆绑不用绳索。

Working without a plan is sailing without a compass
工作没有打算,犹如航海没有罗盘

The authority is not reasonable.
这个判例并不合理。

Reasonably adv.
适度地。

This is a potent reason.
这是一个令人信服的理由。

Is this a reasonable postulate?
这是不是一个合理的假设？

A reason to start over new, and the reason is you.
一个让自己重新开始的理由，而这个理由就是你。