He had a terrible temper, and sometimes he would completely lose control.

他脾气暴躁，有时会完全失控。

《柯林斯英汉双解大词典》

The goal is not to completely lose your accent, but to make certain that pronunciation is not an obstacle to your being widely understood.

我们的目标不是让你完全失去自己的口音，而是不要让发音成为你交流的障碍。

youdao

They completely lose reality with how to deal with the truth and will go on the defensive fighting for the truth or rather their truth. A lie.

当说话者完全失去如何处理真相以及如何保卫事实或者相对事实的现实可能性时会说谎。

youdao

It is particularly rare for patients to completely lose their voice, even in the setting of bilateral cord paralysis.

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"Judging by the current situation, if fruit growers were to adopt GM fruits, they would completely lose their market in Europe, " she said.

BBC: GM apples could fight tooth decay

Various countries also have been formulating new rules or guidelines to assure that before satellites completely lose power and no longer can be controlled, operators will abide by plans to park them in out-of-the-way orbits or safely bring them back to earth.

WSJ: Falling Satellite Debris Might Hit U.S.