causal
/ˈkɔːzəl/adjective
1- of, relating to, or acting as a cause（与）原因（有关）的; 构成原因的：
the causal factors associated with illness.
致病因素。
1.1
- Grammar & Logic expressing or indicating a cause【语法, 逻】表示原因的：
a causal conjunction.
表原因的连接词。
派生词
causally
adverb词源
late Middle English (as a noun denoting a causal conjunction or particle)： from late Latin causalis, from Latin causa 'cause'.