我们必须服从于需要.We must bow to necessity.因为心理学是一门科学, 它主张其理论要服从于观察或实验.Because psychology is scientific, It'submits its theories to empirical testing.人类是宇宙中的人类, 是服从于宇宙规律的.Being is a cosmic being, under the cosmic laws....

“服从于”的英语可以翻译为：e obedient to，submit to...