我的父亲，在幻灯片统治时代，他在麻省理工学院接受工程教育，经常感叹由于袖珍计算器带来的便利性，削弱了我这一代人的数学能力。

My father, who was trained in engineering at M. I. T. in the slide-rule era, often lamented the way the pocket calculator, for all its convenience, diminished my generation's math skills.

youdao

笑声，像许多其它内啡肽触发器一样，能帮助减少一定程度的应激激素，而且还可能就有感染力，增强你的免疫系统，而不是削弱它。

Laughter, like so many other endorphin-triggers, helps to reduce certain stress hormones and, while it might be contagious, it strengthens your immune system rather than weakening it.

youdao

邓布利多把消灭魂器的任务交给了他，他也就顺从地继续削弱那根不仅连接着伏地魔的生命、也连接着他自己生命的纽带！

Dumbledore had passed the job of destroying them to him, and obediently he had continued to chip away at the bonds tying not only Voldemort, but himself, to life!

youdao