世界是美好的，但难免有不愉快用英文怎么说？

the world is nice, but inevitably there is unhappiness in it.

楼上只有丫丫鬟鬟的句子是读得通的

the world is beautiful but still with some unpleasures

The world is wonderful, but never lacks mishaps.

The world is wonderful, but unavoidably has not happily

The world is fine, but unavoidably is displeased.

The world is fine, but difficult don't need to have unpleasantness
~选我哦~