| 单词 | 以防传染 |
| 例句 | DEFINITIVE EXAMPLES 权威例句Each needle is sterile and is disposed of after use to prevent the spread of infection.每支注射针都是消过毒的，用后扔掉，以防传染。剑桥国际He had to be quarantined for a few days to prevent the infection from spreading.他必须被隔离检疫几天以防传染病的传播。剑桥国际 |
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