if necessary for years信息详情
如果需要多年
if necessary───如果必要的话；如必要的话
for years───好几年；多年以来，好多年; 累月经年
necessary───n.必需品；adj.必要的；必需的；必然的；n.(Necessary)（英）内塞瑟里（人名）
for many years───多年；已经很多年了；积年
in necessary───必要时
years───n.[天]年；年龄；岁月；年代
if for you───如果对你来说
not necessary───不需要；不必要
for past five years───过去五年
This would be enough to take Greece out of the market, if necessary, for more than two years.───这将足以令希腊离开市场两年多(如果有必要的话)。
I don't know if that time apart was necessary for me to realize it, but I had more fun with her that week than I had in years.───我不知道那段分开的时间对我来说是否有必要让我想明白它，但那一周我与她在一起的欢乐比几年来的都多。
We shall prove ourselves once again able to defend our island home, to ride out the storm of war, and to outlive the menace of tyranny, if necessary for years, if necessary alone.───我们要再次证明我们能够保卫我们的岛国，使其逃离战争风暴，并能够在压迫统治下永久的生存，即使需要许多年，即使需要孤军奋战。