1. 在这个竞争激烈的世界，只有适者才能生存。
Only the fittest can survive in the cut-throat world.
In this cut-throat world, only the fittest will survive/prevail.
2. 家是我们永远的避风港，尤其是一个人在残酷的社会摸爬滚打好久之后，到家的一刹那，更感觉到家的温暖。
Every Spring Festival, when back from that cut-throat world ,I find no unsurprisingly home is always there, safe and warm.
