The two girls exchanged furtive glances across the dinner table and tried hard not to giggle.这两个女孩隔着餐桌诡秘地交换眼色，拼命地忍住不笑出来。He leaned forward with a sly smile.他俯身向前诡秘地一笑。She glanced slyly at Madeleine.她诡秘地向马德琳瞥了一眼。She smiled mysteriously.她诡秘地笑了。He winked slyly.他诡秘地眨了眨眼。