drawbridge

/ˈdrɑː.brɪdʒ/

名词

（旧时城堡等的）吊桥；（使大型船只能够通过的）开合桥
The ancient castle had a massive drawbridge that was used to keep invaders at bay during times of war.
古老的城堡有一座巨大的吊桥，用于在战争时期防止侵略者入侵。