| 单词 | opening and closing |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔EXPRESS〕The sound the bird makes is difficult to describe -- it's a bit like scissors opening and closing rapidly. 这鸟儿的声音很难形容—有点像剪刀在很快地一开一合。朗文写作活用〔Wilson cycle〕The cyclical opening and closing of ocean basins caused by movement of the earth's plates.威尔逊周期：由于地球板块移动所引起的周期性海洋出现和消失美国传统〔anthem〕The European anthem was played at the opening and closing ceremonies.欧洲颂歌在开幕礼和闭幕礼上演奏。牛津高阶〔bang〕A window was banging somewhere(= opening and closing noisily).什么地方有扇窗户在砰砰地开开关关。牛津高阶〔doorknob〕A knob-shaped handle for opening and closing a door.球形把手：一种用来开、关门的球形把手美国传统〔guard cell〕One of the paired epidermal cells that control the opening and closing of a stoma in plant tissue.保卫细胞：控制植物组织中气孔开闭的成对表面细胞之一美国传统〔heat〕Adjust the heat of the barbecue by opening and closing the air vents.通过开关气阀来调节烧烤架的温度。柯林斯高阶〔indistinct〕There were indistinct sounds of the cell door opening and closing a few times.偶尔有几回传来牢门启闭的微弱声响。英汉大词典〔scissor〕Any of various gymnastic exercises or jumps in which the movement of the legs suggests the opening and closing of scissors.剪式腿：各种体操练习或跳跃中腿部开合的动作美国传统 |
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