They avoid going out alone after dark. 他们避免在天黑以后独自外出。
Children shouldn't stay out after dark. 孩子们天黑后不应待在户外。
Surveys consistently find that men report feeling safe on the street after dark. See, for example, Hindelang and Garofalo ( 1978 ) 多项调查一致显示,男性认为天黑后在大街上行走是安全的。比如,参见欣德朗和加罗法洛(1978)。