late 15c., from Latin obscurationem (nominative obscuratio) "a darkening, obscuring," noun of action from past participle stem of obscurare (see obscure (v.)).
实用例句
1. Deal with the causes of obscuration, not with the sun.
(比如眼翳)需要治理的是障碍的成因, 而非太阳.
来自互联网
2. Smoke obscuration test applied to measure and assess the potential hazard to the obscuration of smoke.
