这是1948年以来他首次访问祖国。
自1994年以来我们一直住在这里。
自她上任以来，这个部门越来越兴旺了。
Since her appointment the department has gone from strength to strength.
这项研究自1961年以来一直在开展，已经取得了大量的积极成果。
This research has been in progress since 1961 and has yielded a great number of positive results.
他参军以来，出生入死屡建功劳。
He has distinguished himself many times at the risk of life since he joined the army.
自去年12月以来，电视节目《国家宝藏》就大受欢迎。
A TV program "National Treasure" has become a huge hit since last December.
Flyte 自1月份面世以来一直受到大多数人的欢迎。
Flyte has been popular with most people since it came out in January.
自1914年以来，科学家们已经知道，以V字形队形飞行的鸟类消耗的能量更少。
Since 1914, scientists have known that birds flying in formation—a V-shape—expend less energy.
自2009年以来，超过1500个电话亭被改造成了花店、迷你咖啡馆、艺术博物馆，甚至是淋浴间。
Since 2009, more than 1,500 phone booths have been turned into flower shops, mini cafes, art museums and even shower rooms.
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