Avoid using goto unless absolutely necessary.

除非绝对必要，否则避免使用无条件转移语句。

He avoids medicating his headaches unless absolutely necessary.

除非绝对必要，他避免用药治疗头痛。

The thunk delays the computation until it's absolutely necessary.

惰性计算会延迟计算，直到绝对必要时才进行。

It is absolutely necessary to put race aside in making diagnosis.

在进行诊断时，绝对有必要把种族放在一边。

C: Is that absolutely necessary here?

在这儿给小费有绝对的必要吗？

I'll fill in if absolutely necessary.

如果绝对必要，我就补这个缺。

Yes, agreement is absolutely necessary.

是的，协议是必不可少的。

Seals are absolutely necessary to bearings.

密封对于轴承来讲是必不可少的.

A harsh double coat is absolutely necessary.

粗硬而浓密的双层毛是绝对必需的.

Make sure every meeting is absolutely necessary.

确保每个会议都是必要的。