without which life would not be as colurfu as it shiuld be定语从句,修饰前面整个句子
as colurfu as it shiuld be是表语从句怎么翻译，业余爱好对于一个人很重要，如果没有业余爱好生活就不能多姿多彩。（楼下翻译的不错）