This gas mask can immunize you against poison gas.防毒面具能使你免遭毒气袭击.Drinking regularly can improve physical quality and enhance ability to immunize.经常饮用牛奶能提高人的身体素质,增强人体的免疫能力.After testing, this vaccine could be used to immun...
She gave him a bright, determined smile which seemed unnatural.她对他开朗、坚定地一笑，但笑得有点不自然。I consider activities such as jogging and weightlifting as unnatural.我认为像慢跑、举重这样的运动不符合自然规律。The aircraft rose with unnatural speed on tak...