This phenomenon exists for a number of reasons. First, Second, Third,
这一现象的存在是有许多原因的.首先, 第二, 第三,
Why did ? For one thing For another. Perhaps the primary reason is
为什么会? 一个原因是 令一个原因是或许其主要原因是.
I quite agree with the statement that the reasons are chiefly as follows.
我十分赞同这一论述,即,其主要原因如下:
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