当你去上大学时，你必须学会自力更生。

When you go away to college, you have to learn to ___fend ___for ___yourself.

在竞争激烈的环境中生存，你必须准备好自力更生。

To survive in a competitive environment, you must be prepared to ___fend ___for ___yourself.

独自生活需要你在没有外部帮助的情况下自力更生。

Living alone requires you to ___fend ___for ___yourself without external help.