The adjustment of marketing strategy led to a twofold increase of demand.

营销策略的调整导致需求增加了两倍。

After being promoted, his salary increased twofold.

升职后，他的工资上升了两倍。

The content of the listening test paper is twofold.

听力试卷的内容分为两部分。

I'm not sure the system could handle a twofold increase, let alone a threefold one.

我不确定系统能否承受两倍的增长，更不用说三倍了。

The problem was twofold.

这个问题分两个部分。

Her original investment has increased twofold.

她原先的投资已经增加到两倍。

The reason for the interview is twofold: we want to find out what he can tell us, plus we also want to find out what condition he is in.

这一采访的原因有两个：我们既想看看他能告诉我们些什么，也想弄清他的处境如何。

The basic problem is twofold.

最基本的问题是双重的。

The purpose of a dam is twofold.

大坝的作用的双重的。