Moreover , generations of new language features and techniques for analyzing programs present new challenges to compilers , which need be adapted to these new language features . we should use new methods to improve code quality and resolve new problems during compiling 同時,新的語言特征和新的程序分析方法的出現(xiàn),也使得編譯器面臨著新的挑戰(zhàn):需要適應新的語言特征,采用新的方法,提高代碼的質量,同時也需要解決編譯過程中出現(xiàn)的新問題。