You must be able to act without resistance or hesitation, but with the appropriate amount of positive restraint to counteract the negative effects of overconfidence or euphoria.

你在交易时必须没有压力或不会犹豫，还必须用积极的态度克服过分自信或过分兴奋的消极效果。

youdao

This means that someone has to travel without using a child restraint or seat belt or someone has to be left behind.

这意味着有人旅行，而不使用儿童约束或安全带或有人要留下。

youdao

Hondo was thought to be carrying a side strain, and he bowled only six overs though apparently without restraint.

BBC: Zimbabwe beat plucky Dutch

The United States is surely right to seek to minimise its own casualties, but if war can be waged by one side without any risk to the life and limb of its combatants, has a vital form of restraint been removed?

ECONOMIST: The ethics of warfare