All of this makes the net benefit of reforestation extremely difficult to measure.

所有这一切都使得重新造林的纯利益极难估算。

youdao

But whether the report proves to be of net benefit or harm to the public health will depend on how it is used.

当然，这份报告对于公众健康最终是会带来好处还是坏处，完全取决于人们如何使用它。

youdao

Yet without knowing the details (which the RATP will not divulge, on the ground that this is an internal matter) it is impossible to judge the net benefit.

然而没人知道细节(RATP以这是内部事务为由不愿透露)。因此无法判断净利益。

youdao

It is true that exercise temporarily raises the odds of a heart attack while you're mid-workout, but doing it consistently reduces that risk over the long haul, leading to a net benefit.

的确，当你在练习的时候，会暂时提高心脏病发作的几率，但是坚持锻炼会长久地降低发病的风险，为你带来更多的好处。

youdao

It is true that exercise temporarily raises the odds of a heart attack while you're mid-workout, but doing it consistently reduces that risk over the long haul, leading to a net benefit.

的确，当你在练习的时候，会暂时提高心脏病发作的几率，但是坚持锻炼会长久地降低发病的风险，为你带来更多的好处。

youdao