| 单词 | presence or absence |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔absence〕The presence or absence of clouds can have an important impact on heat transfer.有无云层对热量的传递会产生重要的影响。柯林斯高阶〔bioscopy〕Medical examination of a body to determine the presence or absence of life.生死栓定法：确定人体生命存在与否的一种医疗检查美国传统〔breathing〕The presence or absence of aspiration indicated by these marks.上述符号所表示的送气音的存在或不存在美国传统〔bubble memory〕A memory in which binary digits are represented by the presence or absence of magnetic bubbles.磁泡存储器：一种存储器，两位数字由磁泡的存在和不存在表示美国传统 |
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