"twofold interest" is a correct and usable phrase in written English.
It can be used to describe a situation where there are two distinct, yet related, interests that someone may have in a particular matter. For example, you could say, "The businessman had a twofold interest in the new venture, as an investor and as a potential customer."
Add to that the three or four documentaries on the WikiLeaks adventure, the dozen books — including, weirdly, Assange's unauthorized autobiography — and a couple speculative Hollywood projects, in which I have a twofold interest.
Thus, dated as it is — one of the unexpected consequences of copyright law is that in the early 21c we have a resurgence of classics from 75 years earlier — this work still presents a twofold interest to the modern student, only one facet of which is evident in its title.
The Islamic State, or ISIS, has a twofold interest in this destruction.
Altogether, these data are of twofold interest.
Section 3(c)(1) is the older of the two exclusions from the definition of 'investment company.' The requirements are twofold: the interests in the fund must be privately placed to investors; and the fund must not have in excess of 100 investors.
The reason, he said, is twofold: a continued interest from the mayor's office, as well as "the advent of partnerships like Friends of the High Line, the Madison Square Park Conservancy and the Broadway Mall Association".
Enron's interest was twofold, officials said.
Minnesota's interest is twofold -- to gain a star and a proven starter, and to give Daunte Culpepper one more season of grooming.
It is of particular interest that twofold alternate (6,3) net subunits constructed from Cd centers and H3CTC ligands are supported by linear TED ligands along the c axis to build a 3D architecture.
This philosophical interest is twofold: A complete philosophical account of the normativity of law comprises both an explanatory and a justificatory task.
Dorine says the reason behind this lack of interest is twofold: Firstly, crowds in public spaces have only recently become large enough to cause trouble.
