One's ears are more attuned to sounds in the darker hours – the very occasional shriek of a shearwater, the other sounds with no known cause.

在黑暗中，人的耳朵会对声音更敏感——偶尔有海鸥发出尖利的叫声，还有各种来路不明的声音。

youdao

An occasional short ride is unlikely to cause trouble.

偶尔一次短途骑车不大可能造成麻烦。

youdao

It can also be linked to the ship's radar, for greater accuracy, though the fact that the laser does not cause permanent damage means that occasional mis-targeting will not matter too much.

虽然激光不会造成永久性伤害的因素意味着偶发性误瞄准的情况问题不大，但激光发射器同样可以与船载雷达连接以确保精确性。

youdao

Also in India, Shiite and Sunni Muslims coexist without regular violence for the most part, although, as I said, in these ritual moments where the Shiites curse the caliphs, that can cause occasional rioting.

NPR: Early Divisions at Root of Sunni-Shia Conflict

Today, the cause of free trade--notwithstanding occasional bouts of protectionism--is gaining ground worldwide.

FORBES: Magazine Article

An occasional reminder of reality helps against the delusions of power that cause most wars.

CENTERFORSECURITYPOLICY: Center For Security Policy