1. 我們占領這座城市以后以后所做的第一件事就是降下城里敵人的旗幟，升起我們自己的旗幟。
   The first thing that we did when we conquered the town was to haul down the enemy's flag and raise our own.
2. 由于他的體溫已經(jīng)降下來了，我想你的孩子一定能恢復健康。
   Now that his temperature has dropped, I'm sure your baby will pick up.
3. 格子吊閘由鐵條、木條或其板條組成的閘門，懸于一城堡的入口處，可降下而堵住入口通道
   A grating of iron or wooden bars or slats, suspended in the gateway of a fortified place and lowered to block passage.
4. 吊索，升降索用來升起或降下船帆，船旗、帆桁的繩索
   A rope used to raise or lower a sail, flag, or yard.

下的英語翻譯：