or: 或者,否则,常用于否定句中 I don't like apples or bananas. Hurry up or you'll miss the bus. and: 并且,Hurry up and you'll catch the bus.
enhance: 使…看起来更好;提高;美化 cement: (比喻)将…结合在一起;加强;巩固。如cement a friendship表示“加强友谊” strengthen: 使…更强