You must be meant to play the piano.

你一定注定就是要弹钢琴。

These letters seem to be meant to be read out loud.

这些书信似乎需要大声朗读出来。

The practice needs to be meant to specifically improve performance, and is even more effective if there's coaching.

实践需要以提高能力为目的，如果有人指导的话，便会事半功倍。

You have been trying like heck to force a feeling, and potentially fix something that may not be meant to be fixed.

你像活见了鬼一样一直尝试着尽可能去修补那些更本就不可能修不好的东西。

Oh, I know, I know, it's meant to be so tragic–poor woman, trapped in a loveless marriage, yadda yadda yadda.

噢，知道，知道，这注定是个悲剧—可怜的女人被束缚在一个没有爱情的婚姻里，诸如此类的。