常見例句Certainly I cannot pretend to know special knowledg of electronics.儅然我不能說已經(jīng)掌握了電子學(xué)的專門知識。I know that his father was green fingers.我知道他爸爸很有園藝技能。People who love out-door activities should know how to produce a fire with a flint.用火鐮打火是許多喜歡戶外活動的人需要掌握的技能。 返回 know-hnw