直到现在为止，我只是在作论述。
直到现在为止，天气都很好，但也许有变。
直到现在为止，我们已经学了大约五年多英语。
Up till now, we have studied English for about more than five years.
直到现在为止，作物培育者还很少注意诱导抗性。
Until now, crop breeders have paid little attention to inducible resistance.
直到现在为止，地球和它的卫星之间还没有建立任何直接联系。
Up tothepresent day no bond exists between the earth and her satellite.
直到现在为止(1：48PMPDT)，我们还没有彻底解决这个问题。
This issue has not been fully resolved until now (1:48 PM PDT).
直到现在为止，地球和它的卫星之间还没有建立任何直接联系。
Up to the present day no bond exists between the earth and her satellite.
直到现在为止，地球和它的卫星之间还没有建立任何直接联系。
Up to the present day no bond exists between the earth and her satellite.
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