小兒麻痹 - 英文線上字典,包含英漢字典、漢英字典、例句及 ... 他失敗了許多次,但終於發現了有效的預防小兒麻痹症的疫苗。 He failed many times but he finally broke through to find a successful polio vaccine. 本港兒童均接受 ...