高二英语复习北师大版《Unit 21单词讲解》 课件 (共126张PPT)

Unit 21 1. interval n. 间隔；间距；中间休息 车辆之间应保持适当的间距。 There should be proper interval between vehicles. 两节课之间是休息时间，学生可以买水喝休息一会。 Between the two classes is an interval, when the audience can buy some water and have a rest. 中场休息时英格兰队落后两球。 England were two goals behind at the interval. 可能有必要不时停下来复习一下该课的重点。 It may be necessary to stop at intervals and go back over key points in the lesson. 2. circulate v. 传播，流传；循环；流通 游泳有助于肌肉的血液循环。 Swimming helps to get the blood circulating through the muscles. 我们应当经常打开窗户以使空气流通。 We should often open the windows to allow the air to circulate. 已传出谣言说，该项目可能会被迫取消。 Rumours were already beginning to circulate that the project might have to be abandoned. 3. digest vt. 消化；吸收；融会贯通 没有水来作为我们日常的摄入部分，我们就不能消化和吸收食物。 Without water as a routine part of our intake, we cannot digest or absorb food. 吸收新思想往往需要很长一段时间. It often takes a long time to digest new ideas. 诚如弗朗西斯.培根曾经说的：“书有可浅尝者，有可吞食者，少数则须咀嚼消化。 As Francis Bacon once said, “Some books are