occasional study

基本解释

An occasional travel to China however predestined my coming to study in China, which enabled me to be accessible to a freshly new world.
偶然的一次中国之行，却必然注定了我来中国留学。让我进入一个全新的世界。
This study provides proof that the strength of your cardiovascular system will not spiral downward to that of a sloth just because you miss an occasional workout.
这一研究证明，您的心血管系统力量不会因为您偶尔错过几次训练而螺旋式下降至向懒人的那样。
We've long known that repeated use damages serotonin brain cells. This study shows that even very occasional use can have long-lasting effects on many different brain systems.
传统观念一直认为只有长时间服用毒品才会破坏脑部官能，而这次的研究结果显示，很偶然的服用一次也有可能使脑神经受到永久性伤害。

The Center's Occasional Paper Series published "Rise of the 'Iran Lobby, '" a comprehensive study of these networks by Clare M.
CENTERFORSECURITYPOLICY: Center For Security Policy