" Difficult—pros and cons on both sides."

两方有利弊。

The concept of sustainable development has been defined as profitable.

可持续发展观已经被定义成了有利可图的发展。

We must make hay while the sun shines.

必须抓紧有利时机。

He invested his capital to the best advantage.

他在最有利可图的领域投资。

Such strictures might seem to serve national cohesion.

这样的限制似乎有利于国家团结。

How can we utilize his knowledge and skill to our advantage?

如何来利用他的知识和技术对有利。

It benefits David that Guinness publishes a wide array of records.

吉尼斯公布了大量的记录，这对大卫很有利。

The tempest still raged with undiminished fury;but the wind now returned to the south–east.

这时，暴风雨更象一匹脱缰的野马，凶狂到了无以复加的程度。幸亏风向又转回东南，这一转变对于航行是有利的。

His rudimentary knowledge in economics put him in an advantageous position at university.

他在经济学方面的基本知识对他在大学有利。

The treaty is to our advantage.

这条约对有利。

There are pros and cons to going vertical.

垂直农业有利有弊。

No matter how remote or unprofitable that delivery may be.

不管送货的远近，或者是否有利可图。

So while economic describes anything economy-related or the success of a business, economical refers to avoiding waste.

也就是说，economic（经济的，有利可图的）是被用来形容跟经济方面的或者成功的生意的一个词。而economical（节俭的，合算的）指的是不要浪费。

It seems like Earth's climate fixed itself to always be favourable to life.

似乎地球的气候固定不变，总是有利于生命的产生。

Now each of these forms of transportation have there pros and cons. Would you agree?

每种交通方式有利弊。你同意吗？

The lawyer made good use of the favorable evidence to refute his counterpart's testimony.

律师充分利用有利证据驳倒了对手的证词。

There's pros and cons, it's a double-edged sword.

有利有弊，这是一把双刃剑。

Americans also use the saying cuts both ways for something like a double-edged sword.

美国人还会用cuts both ways这一说法表达事物有利弊。

Their results offer ammunition for fans of more open borders.

研究结果为 “更开放边境” 的支持者提供了有利证据。

Both sides agree that sound bilateral relations are beneficial to world peace and prosperity.

双方一致认为，良好的双边关系有利于世界和平与繁荣。