its been a long time

好久不见了

a long time───良久；半歇；多时；半晌；长时间；很长一段时间；许久

its long───它很长

is long long a time───很长很长一段时间

long time───adj.长期的（持久的）; 长时间; 好久好久；adj.长期的（持久的）；长时间；好久好久

its time───它的时间

for a long time───长久；且；久；日长岁久；很长时间，很久

a long time ago───adv.很久以前; 悠远

not a long time───不久

is a long time───是一段很长的时间

Although it dates from several hundred years after the building of the pyramids, its sophistication suggests that the Egyptians might have been developing ideas of flight for a long time.───尽管它的历史可以追溯到金字塔建造后的几百年，但它的复杂程度表明，埃及人可能很长一段时间以来一直在思考飞行的想法。

That's a model that has been around for a long time and, like any model, it has its strengths and weaknesses.───这是一种盛行已久的模式，它和任何模式一样有优点，也有美中不足之处。

is wrong to play down the costs of globalization, but the reality is that we've been playing down its benefits for a long time.───全球化是错误的，但事实却是长期以来我们从全球化中所获得的收益一直在减少。

anyway how are you? hope you're fine. same with you its been a long time since i send my last email.───无论如何，你好吗？希望你很好。跟你一样，自从上次给你写信到现在也有段时间了。

Its been a long time.───已经好久了。