mechanisms
n. 机械装置，机件；途径，方法；（生物体内的）机制，构造（mechanism 的复数）
例句
The body has natural defence mechanisms to protect it from disease.
人体对疾病具有先天性防御机制。
《牛津词典》
What mechanisms control handedness and keep left-handedness rare?
是什么机制控制了用右手或左手的习惯并使左撇子很少出现？
Other respiratory regulating mechanisms apparently cease functioning during sleep.
其他呼吸调节机制显然在睡眠期间停止运行了。
