n.缕；(线等的)股；海滨，河岸，海滩
v.使陷于困境；弄断；使落后；（使）搁浅
She twirled a strand of hair round her finger. 她把一绺头发卷绕在手指上。
One strand of silk doesn't make a thread; one tree doesn't make a forest. 单丝不成线,独木不成林。
