as cool as a cucumber
... as common as muck 粗俗的(注:muck:粪,厩肥…) as cool as a cucumber 镇定自若(看到这个差点没让我笑喷…) as good as gold (小孩)很乖(这比喻真不错,就是有点俗…) ...
keep one's countenance
... keep one's countenance 镇定自若 give countenance to 赞成 keep someone in countenance 使某人克制灰心情绪...
presence of mind
... in sb's presentce 当着某人的面,有某人在场 presence of mind 镇定自若 absence,缺席 ...
镇定自若,汉语成语,拼音是zhèn dìng zì ruò,意思是指在情况紧急时不慌不乱,当作没什么事情似的。也指镇静;不急迫;不急促。不慌不忙,沉着镇静。