Getting it to fit exactly is a tricky business.

使这完全合适是件很难做到的事。

《牛津词典》

The brackets shall be designed to fit exactly into the pipes for which they were designed.

所设计的平台应该与所设计的管道精密配合。

youdao

Thanks to the modular architecture of the Agilent platform, the test environment can be extended to fit exactly with the subsystem's test needs.

由于安捷伦平台有模块架构，测试环境才可被扩展以适应子系统测试需求。

youdao

But the fact is that I'm sure there are a few people - - thay may be more than a few in the facility - who do feel that rock and roll is not exactly what one says fit and proper.

不过事实上，我相信,在学校里确实有许多人-,认为摇滚和艺术,并不完全相称。

普林斯顿公开课 - 人性课程节选

It was later found to fit exactly into a large rectangular stone with a worn hole which was located at the base of the Canna cross.

BBC: 'Cursing stone' found on Isle of Canna

The oval ear tips are included (I prefer the medium-sized flange ones, if you're curious), and they fit like a glove -- in fact, they fit exactly like the tips on my X10i.

ENGADGET: IRL: Klipsch Image X7i, Razer BlackShark and BlueAnt's Embrace headphones

None of the terms fit exactly.

FORBES: Multiplayer Games: Next IPad Trend?