精选优质文档-倾情为你奉上Unit 1squarev. to set straight or at approximate right angles使成方形discreetlyad. carefully谨慎地,小心地reserven. self-restraint in expression; the habit of not showing ones feelings or thoughts矜持,拘谨;寡言whereaboutsn. the place where somebody or something is下落, 去向anthologyn. a collection of literary pieces, such as poems, short stories, or plays (诗、文等的)选集gropev. to search blindly or uncertainly暗中摸, 摸索tip offto give an advance warning or hint to暗示, 警告，因倾斜而使掉下来goody
