In Latin, opportunus means opportune or favourable (opportunitas = opportunity); the word itself is a contraction of ob portus ("toward the harbour/entrance") or oppositum portus ("facing the harbour/entrance").
在拉丁语中，opportunus意为机会或好事情（opportunitas = 机会）；本身就是ob portus（朝向港口/入口） 或 oppositum portus（面向港口/入口）的缩略语。