你可以说 "Overcome shyness" 或者 "Conquer shyness" 来表达 "战胜害羞" 的意思。

这两个短语都来自于动词 "overcome" 和 "conquer",它们的意思是 "克服,战胜"。

例如:

"She had to overcome her shyness in order to give a presentation in front of a large audience." (她不得不克服自己的害羞,才能在大批观众面前做演讲。)
"He conquered his shyness by joining a pubpc speaking club." (他通过加入公共演讲俱乐部,战胜了自己的害羞。)

其他表达方式还包括 "defeat shyness" 和 "beat shyness",它们的意思也是 "战胜害羞"。例如:

"She defeated her shyness by practicing speaking in front of a mirror every day." (她通过每天在镜子前练习演讲,战胜了自己的害羞。)
"He beat his shyness by forcing himself to talk to new people at social events." (他通过在社交活动中强迫自己和新人交谈,战胜了自己的害羞。)