例句與造句

1. New recommendations indicate that the combination shot may sometimes be given every 2 - 3 years after dogs reach adulthood
   新的建議指出在狗狗進入成熟期后，聯(lián)合型疫苗需要每2 - 3年注射。
2. It's difficult to find combination shot in a sentence. 用combination shot造句挺難的