您要查找的是不是：
- Weather is ever changing on Mars. Global dust storm may happen occasionally and cover the whole planet. 火星上的天气变幻莫测,间中会出现掩盖整个行星的黄尘风暴。
- This kind of lucky does not exist,it happens occasionally. 这种运气是不存在的，只是碰巧发生了而已.
- If he negates in his mind all the loving support she has given, when she does express some negativity, which is bound to happen occasionally, he then loses his motivation to give.He becomes passive. 如果她偶然出现否定的表达方式，他心里也会否定她所给与的爱的支持，失去主动给与的力量，而变得被动。
- The larva has the same but without wingspreading, and grooming and excretion happened occasionally. 瓢虫幼虫无展翅行为，且梳理和排泄行为较少发生。
- In latest years, the food poisoning events happened occasionally because the pesticide and veterinary drug were slathered in animal production. 但由于生产中大量使用农药和兽药等产品，使得蔬菜、水果、茶叶等植物产品中的农药残留、动物产品的兽药残留和其他有毒有害物质超标导致的食物中毒事件时有发生，食品安全问题越来越成为社会广泛关注的焦点。
- The rule is inapplicable to this occasion. 那规则对这一场合不适用。
- All the solemnities of the occasion were observed. 那种场合下应该具有的一切庄重的仪式都举行了。
- She fall to brood about what have happen to her. 她开始沉思默想自己的遭遇。
- Occasionally she had to take sleeping pills. 她偶尔不得不吃安眠药。
- He had perked himself up for the occasion. 他为此事打扮了一番。
- A poor contact causes power to fail occasionally. 接触不良有时会造成断电。
- A funeral is a melancholy occasion. 葬礼是一个令人忧伤的场合。
- I have seen this happen more than once. 发生这种事我屡见不鲜。
- He managed to remain cool by swimming occasionally. 他不时地游泳来使自己保持凉快。
- He will help us as occasion requires. 必要时，他会帮助我们的。
- We happen to hold the same view. 我们两人的想法不谋而合。
- On that occasion he looked a perfect fool. 在这个场合，他看起来就像一个大傻瓜。
- The story came pat to the occasion. 那个故事恰恰适合那个场合。
- His keen wit flashes out occasionally. 他的机智不时闪露出来。
- Be prepared for anything to happen. 准备好对付任何可能发生的事件。
