丹心[dān xīn]
词典loyalty：忠心；忠诚，忠实；忠于…感情。
词典loyal heart：丹心；红心。
loyal heart; loyalty:
例：留取丹心照汗青
that my loyalty may leave a page in the annals
1. loyalty：丹维尔Danville | 丹心loyalty | 丹引擎single-engine