可以这样翻:
We (all chinese) expect/hope Taiwan return to our motherland as soon/early as possible.
或:
Taiwan is expected to return to our motherland as soon/early as possible.
[说明]
1.不要把它(回归)看成不可实现的,所以请不要用wish.
2.回归祖国怀抱,只要return to our motherland/mainland 就可以了,不要一定要翻怀抱(chest胸腔啊)或"再结合"了.