许多古罗马时代的引水渠至今还保留在地中海附近.Many aqueducts from ancient Roman times still stand today near the Mediterranean Sea.洛杉矶引水渠像一条蜿蜒于山底的巨蟒.The los angeles aqueduct winds like an immense snake along the base of the mountains.但太多的流出量也会...
Objective To evaluate the clinical effects of butorphanol preemptive analgesia on brachial plexus block with ropivacaine.目的评价布托啡诺超前镇痛对罗哌卡因臂丛阻滞效果的影响....
Astigmatism can occur in addition to nearsightedness and farsightedness.散光可发生在除近视和远视.Such farsightedness is, alas , only a drop in the bucket.可惜,这些远见只是杯水车薪.FARSIGHTEDNESS is an asset whose value should not be underestima...