occasional /əˈkeɪʒənl̟/ adjective Learner's definition of OCCASIONAL
always used before a noun
1
: happening or done sometimes but not often : not happening or done in a regular or frequent way偶尔的；不经常的 -
She receives occasional phone calls from her mother.她偶尔接到母亲的电话。
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There will be occasional showers during the morning.上午偶尔会有阵雨。
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She makes occasional appearances on television. = She appears on the occasional television show.她偶尔在电视上露面。
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Most mornings, we'll see deer or the occasional bear walking past our house.几乎每天上午，我们都会看到鹿从房前走过，偶尔也有熊。
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He tells an occasional joke to keep his students interested.有时他会讲个笑话来保持学生们的兴趣。
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I need to take occasional breaks from work.我有时要停下工作休息片刻。
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Sure, I drink an occasional glass of wine from time to time.当然，我偶尔喝杯葡萄酒。
2
: sometimes doing a particular job or activity非定时的；临时的