composure

1. N-UNCOUNT Composure is the appearance or feeling of calm and the ability to control your feelings. 鎮(zhèn)定; 定力[正式]

She was a little nervous at first but she soon regained her composure. 她起初有點(diǎn)緊張但很快就恢復(fù)了鎮(zhèn)定。