Finding more efficient ways to travel, and to do so only when absolutely necessary.

寻找更有效的差旅方式，并且在绝对必要时才进行差旅。

youdao

Rolledbales of hay should be used only when absolutely necessary, and only if theouter layers are removed and discarded.

确实需要时可以使用成捆的干草，但外层要剥掉废弃

youdao

Wearing your heels only when absolutely necessary can reduce the likelihood that you develop heel-related health problems such as ankle sprains, early onset osteoarthritis, and joint problems.

只在真正有必要的时候才穿高跟鞋可大大减小你患高跟鞋引起的健康问题的可能性，如踝关节扭伤，早期骨关节炎和其他关节问题。

youdao

"It is a promise that as long as I am your Commander in Chief, I will only send you into harm's way when it is absolutely necessary, and with the strategy, the well-defined goals, the equipment and the support you need to get the job done,"

VOA: standard.2009.05.22

If we send our men and women in uniform into harm's way, then it must be only when it is absolutely necessary.

WHITEHOUSE: President Obama Bestows Presidential Unit Citation on the Blackhorse Regiment | The White House

In return, they agree to whine only when it's absolutely necessary -- or every five seconds, whichever comes first.

CNN: Five museums you AND your kids will enjoy

Guidance from the council says an emergency closure should only be made when it is "absolutely necessary in the best interests of pupils".

BBC: School closures