当前分类下找不到" Even+in+rural+parts+of+the+U.S.+it+can+take+hours+to+drive+to+a+specialist,+while+a+primary+care+physician+might+quickly+email+that+specialist+a+photo+of,+say,+a+diseased+retina+first+to+see+whether+the+trip's+really+necessary.+"的例句。