光学技术是近年来轰动一时的科学成就之一。
Optics technology is one of the most sensational developments in recent years.
多年来，比利时联邦始终认为它可以成为欧盟的楷模。
For years, federal Belgium thought it would be a model for the European union.
青春去时不告别，老年来时不招手。
但是，正当他可以享受多年来努力的成果时，他生病了。
But just when he was able to enjoy the fruit of his labor, he fell ill.
近年来，很多学者对个体索赔额分布为重尾分布时的风险模型进行了研究。
In recent years, many scholars have studied risk model with individual claims size is Heavy-tailed.
看看英语现在完成时五年来这位老师一直在这所学校教书。
The teacher has happen to been teaching as well school for 5 years.
本文主要介绍近年来，时隙aloha技术在移动卫星通信中的一些新的发展趋势。
This paper propose the new development of S-ALOHA technique used in mobile satellite communication system.
激光是近年来最轰动一时的成就之一。
Laser is one of the most sensational developments in recent years.
我们住在乡下时，常常进城。多年来，她总是每天都来看我们。
When we lived in the countryside, we went to town very often.
我们住在乡下时，常常进城。多年来，她总是每天都来看我们。
When we lived in the countryside, we went to town very often.
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