您要查找的是不是：
- There are several different stages of sleep, and they too occur in cycles. 人的睡眠分几个阶段,而这些阶段也是循环发生的。
- These are several different stages of sleep, and they too occur in cycles. 人的睡眠分为几个阶段，而这些阶段也是循环发生的。
- Life and death occur in cycles,"Tabiti said."Only when great loss and great gain happen at the same time can such power be maintained. 生命和死亡循环发生,"塔比提说"只有当巨大的损失和巨大的痛苦同时发生时,才能获得这样的能量。
- Food shortage often occur in times of war. 战争期间常发生粮食短缺现象。
- Find the expected life of the part in cycles. 求零件的预期寿命的循环数。
- TurnTo recur in cycles or at periodic intervals. 循环往复:在周期中或周期性间隔中重复出现。
- Fish doesn't occur in the river. 这条河现在已经没有鱼了。
- These plants occur in the tropics. 这些植物产於热带。
- This is an obvious sequencing that can be understood in cycles. 这是明显的先后顺序，可以用循环周期来理解。
- Many mistakes occur in your composition. 你的作文出现了许多错误。
- Food shortages often occur in times of war. 战争时期常常发生粮食短缺的情形。
- This kind of weather is apt to occur in late May. 这种天气往往在五月底出现。
- Many accidents occur in the home. 许多事故都是在家里发生的。
- Thunderstorms often occur in summer. 雷雨常发生于夏天。
- Ejection murmurs ordinarily occur in midsystole. 喷射音一般出现在收缩中期。
- That sound does not occur in my language. 那个音在我们的语言中不存在。
- These two events did not occur in the same year. 这两件事不在同一个年分内。
- The kidnapping occurred in broad daylight. 在光天化日之下竟发生绑架事件。
- Our ignorance of the world traps us in cycles of misery. 我们对这世界的无知使我们陷入循环性的悲惨。
- That sound doesn't occur in his language. 他的本国语中没有这个音。
