Are frequently used to show yourself familiar with and good at things, so when people face the difficulties and challenges, the first thought is back, so lost much beyond their own opportunities, and can't play to their potential, this is very regrettable. In fact, people can overcome difficult things to make themselves progress, to do unexpected things. Brave people dare to challenge the impossible and succeed.
经常被用来表现自己对事物的熟悉和擅长，所以当人们面对困难和挑战时，首先想到的是回来，所以失去了很多超越自己的机会，而无法发挥自己的潜力，这是非常令人遗憾的。其实，人可以克服困难，使自己进步，做意想不到的事情。勇敢的人敢于挑战不可能，敢于成功。