The pill is the most efficient method of birth control.

避孕药是最有效的节育办法。

new teaching methods.

新的教学方法。

Child psychologists have devised many ingenious methods of investigating this.

儿童心理学家们想出了许多研究这个现象的巧妙方法。

Experts will use a variety of scientific methods to measure fatigue levels.

专家们将用多种科学方法来测量疲劳程度。