Please make sure to download the new software so that you can avoid any unnecessary complication.
请务必下载新的软件，让您可以避免任何不必要的麻烦。
I suspect that his presence would have been an unnecessary complication - he would have said or done something to make the situation even more complicated than it already was.
我怀疑他的到场将会导致一个不必要的混乱局面——他也许会说或做一些东西，使本就复杂的局面变得更加混乱。
Drama adds unnecessary stress and complication to any relationship.
小题大做会给各种关系施加不必要的负担和复杂性。
Drama adds unnecessary stress and complication to any relationship.
小题大做会给各种关系施加不必要的负担和复杂性。
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