Love is hard to get into but harder to get out of.

很难投入，但一旦投入，便更难走出。

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Love is hard, can't expect it to come out like a dream.

恋爱是艰苦的，不能期待它象美梦一样出来。

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Some people said love is hard to achieve our goals, that is due to their weak will.

有的人爱说目标很难达到，那是由于他们的意志薄弱所致。

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Like many of U2's songs, it is an expressive love song with a melody that is hard to forget.

VOA: special.2009.04.10

In a quarterback-dominated NFL, that tough love is hard to argue with.

WSJ: Jason Gay: Sanchez Is the Jets' QB Question

Mr. BLANCHARD: ...because one of the things about that team that I love is it was hard to defend that team because if Worthy was on that night, he got the ball all night, you know.

NPR: Terence Blanchard, in the Jazz 'Flow'

These are stories about the difficulty of love: how hard it is to recognise or hold onto.

ECONOMIST: The curse of machismo