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- A source of annoyance; a nuisance. 烦恼的根源，棘手的事苦恼的根源；讨厌的东西或人
- She found his constant presence a source of annoyance. 她发现他老在她眼前碍著她。
- A source of irritation or annoyance. 令人生气的事或者引起烦恼之事
- A source of harassment, annoyance, or pain. 使人痛苦的东西骚扰，烦恼或痛苦的来源
- A dog that barks constantly can be a source of annoyance to the neighbours. 吠个不停的狗会惹邻居烦恼。
- And the unpunctual man is a source of annoyance both to others and to himself. 你要出人头地，必须要不断提高自己的能力，有出类拔萃的资本才行。
- A source of harassment,annoyance,or pain. 使人痛苦的东西骚扰，烦恼或痛苦的来源
- He's been a source of discord and worry. 他成为不和和烦恼的根源。
- A source of deep mental anguish. 悲痛的缘由精神极度痛苦的根源
- A source of nagging concern or uneasiness. 忧虑的事令人烦恼不安的担忧或不安的原因
- A source of spreading corruption or decay. 腐败的原因传布腐败或腐朽的根源
- Bad food is a source of illness. 坏了的食物是疾病之源。
- A source of such energy, as a waterfall. 产生这样能量的源泉，如瀑布
- Economy is in itself a source of great revenue. 节约本身就是最大的收入。
- Folk songs are a source of literature. 民歌是文学的一个源头。
- A source of usable power,such as petroleum or coal. 能源可用能量的来源，如石油或煤
- He's totally unreliable as a source of information. 他提供的消息完全不可信。
- Success in sport is a source of national pride. 体育成就是民族光荣的源泉。
- Anything that can burn is a source of heat energy. 任何能够燃烧的东西都是热能源。
- In a radio tube there is a source of electrons. 在电子管中，有一个电子发射源。
