A truly loyal person will not serve two masters, just as a virtuous woman will not marry a second husband. It signifies unwavering loyalty and faithfulness to one's commitments or principles.
小王对自己的事业有着忠臣不事二君的坚守，无论遇到多大困难，他都坚持不懈，从不轻易放弃。
Xiao Wang has an unwavering commitment to his career, embodying the spirit of 'a loyal person serves no second master.' No matter how great the difficulties, he perseveres and never easily gives up.
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