Software rots if not used.

软件不用就会腐朽。

youdao

Throw them out if not used within two days.

如果在两天之内没使用的话，则应把它们扔掉。

youdao

If not used correctly, high temperature burns may occur.

如果使用不当，高温将会烫伤。

youdao

The treatments can cause dangerous and even deadly reactions if not used carefully.

VOA: special.2010.01.25

So, for example, Wellbutrin, it is very unlikely that it would have thionyl chloride in order to make it, and if thionyl chloride was used at some point in the synthesis, it was not to put that chlorine atom on, it was to put something else on.

比如，安非他酮，用亚硫酰氯来制造它,是不太可能的，而就算在合成过程中的某一阶段用到了亚硫酰氯，它也不会把氯原子加进去，而是把其它东西加进去。

麻省理工公开课 - 化学原理课程节选

but at the same time it's really different if you're not used to it.

但是如果你不适应这种环境的话，还是会觉得很不同。

尊重多样化 - SpeakingMax英语口语达人

"Operating spa pools on display in indoor spaces, even if not used for bathing, have been previously shown to be the cause of outbreaks in other countries, " the report added.

BBC: JTF Warehouse

And as I understand it, the reason Kathleen made this decision was she could not be confident that a 10-year-old or an 11-year-old go into a drugstore, should be able -- alongside bubble gum or batteries -- be able to buy a medication that potentially, if not used properly, could end up having an adverse effect.

WHITEHOUSE: President Obama Speaks on Confirming Richard Cordray

While it is included in the commodities basket it is in fact a medium of exchange and one that is officially recognised (if not publicly used as such).

FORBES: Signs Of The Gold Standard Are Emerging From Germany