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| 1. | This medicine will last for a time, but after six months you'll need a booster. |
| 这种药的效力可维持一个时期，但六个月后就需要使用增强药效的辅助剂。 |
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| 2. | This injection will protect you against the disease, but after six months you'll need a booster. |
| 这注射剂会防止你得那种病，但是六个月后你需要一剂加强剂。 |
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| 3. | What we really need is a booster chair for our daughter. Do you have one? |
| 迪瑞克：不用了，谢谢。我女儿需要一把高脚椅，你们有吗？ |
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