People who suffer from allergies can sometimes be injections to help desensitize them.患过敏反应的人有时可用注射针剂以帮助脱敏.He has occasional injections to maintain his good health but otherwise he lives a normal life.他偶尔要注射药物保持身体健康，但除此之...
The doctor was associated in the child's mind with injections and pains.在孩子的心里,医生总是使他联想到打针与疼痛.Injections of vitamin C are obviously advantageous.注射维生素C显然是有利的.He has occasional injections to maintain his good health ...