Continuous describes something that continues without stopping. * continuous 指持续的、不间断的。
Continual usually describes an action that is repeated again and again. * continual 通常指一再重复。
The difference between these two words is now disappearing. In particular, continual can also mean the same as continuous and is used especially about undesirable things.上述两词的差异正逐渐消失，特别是 continual 亦含有与 continuous 相同的意义，尤指不希望发生的事：◆Life was a continual struggle for them.生活对他们来说就是不断的挣扎。 However, continuous is much more frequent in this sense.不过，用 continuous 表达此义常见得多。