只要他说一句话, 一切问题就解决了。用英语怎么说？

只要他说一句话, 一切问题就解决了。

And a word from him would settle everything.

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

word

n. 单词，话语，诺言，消息；vt. 措辞，用词，用言语表达；vi. 讲话；

例句
...the magic that still attaches to the word 'spy'.
“间谍”一词依然具有的神奇魅力

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

him

pron. (he的宾格)他；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。

would

aux. 将，将要，愿意，会，打算，大概；v. (will 的过去式，用于转述)将；

例句
I would love to go abroad this year, perhaps to the South of France.
我今年很想出国，可能是去法国南部。

settle

vt. 解决，安排，使定居，使沉淀；vi. 下沉，定居；n. 高背长靠椅；

例句
...until the great day came when the Germans could finally settle accounts with the British...
直到德国人最终能和英国人清算旧账的重大日子的来临

everything

pron. 每件事物，最重要的东西，（有关的）一切，万事；

例句
I want to be honest, honest above everything else.
我想要做到诚实，一切以诚实为上。