-（形容心事重重的样子）bendthebrows;Afrownneverleftone'sface.;browscontractedwithoutrelaxation;contortone'sfeatures;frowningrief;knitthebrows;knittingone'sbrowsinanxiety;lookblue;(He)lookedtroubled，andevenfrowned.;loweringeyebrows;One'sknittedbrowsdidnotrelax，norone'sgloomyfeatureslighten.;withfrownofanxiety;withknittedbrowsinworry