It may be useful but costs too much.

它可能有用，但成本太高。

youdao

These methods may be useful for a while, but it is difficult to solve this problem completely.

这些方法可能暂时有用，但要完全解决这个问题是很困难的。

youdao

However, it does mention some concepts that may be useful.

然而，本文提到了一些可能十分有用的概念。

youdao

I think it's very useful. It may not be immediately apparent to people in Darfur, but in the end it is a contribution towards a solution to their problem."

VOA: standard.2009.10.23

On the other hand, you don't have to withhold information that may be useful to the class.

另一方面,你又不能刻意保留对这门课有用的信息

耶鲁公开课 - 基础物理课程节选

Some may or may not be useful, but you just don't know.

有些可能有用,有些可能没用,但你们现在还不知道

耶鲁公开课 - 基础物理课程节选

The new stadiums may be useful for future sports events, concerts or religious rallies.

ECONOMIST: The Caribbean

Vehicles such as irrevocable trusts may be useful to safeguard assets from potential creditors.

FORBES: 3. Protecting your family assets

Militarily, shells and rockets with chemical warheads may be useful against dense force concentrations.

ECONOMIST: Syria and its chemical weapons