单词学习：imperturbability 名词 (抽象品质)
imperturbability
/ˌɪmpəˌtɜːrbəˈbɪləti/
沉着，冷静，泰然自若
In the face of the sudden crisis, Mr. Gu's imperturbability helped calm the entire team.
面对突如其来的危机，顾老师的沉着冷静帮助安抚了整个团队。
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