surgeon n. a doctor who does surgery外科医生 The surgeon completed a successful operation on the patient.这位外科 医生成功地给那病人做了手术。 sponge n a simple sea animal with a rubber-like body, a piece of plastic or rubber material full of holes used for washing, cleaning, etc. y4 绵 He cleaned the table with a sponge.他用海绵擦桌子 assure vt1.tell positively or confidently郑重告知 I assure you that this medicine cannot harm you.我郑重告诉你,这药 对你无害。 make (onese If sure or certain, convince使确信 Before going to bed she assured herself that the deer was locked.睡觉前 她确保自已已把门锁上子surgeon n. a doctor who does surgery 外科医生 The surgeon completed a successful operation on the patient. 这位外科 医生成功地给那病人做了手术。 sponge n. a simple sea animal with a rubber-like body; a piece of plastic or rubber material full of holes used for washing, cleaning, etc. 海 绵 He cleaned the table with a sponge. 他用海绵擦桌子。 assure vt. 1. tell positively or confidently 郑重告知 I assure you that this medicine cannot harm you. 我郑重告诉你，这药 对你无害。 2. make (oneself) sure or certain; convince 使确信 Before going to bed she assured herself that the door was locked. 睡觉前， 她确保自己已把门锁上了