A shoal of porpoises are well on the feed.一群海豚正在吞食.In 1928 some porpoises were photographed working like beavers to push ashore a waterlogged mattress.1928年有人把这些海豚象海狸那样把一床浸泡了水的褥垫推上岸时的情景拍摄了下来.There has long been a superst...
这种外科手术甚至可以用来切除癌性肿瘤。This type of surgery could even be used to extract cancerous growths.他做了个切除囊肿的小手术。He had a minor operation to remove a cyst.把肥膘从火腿上切除。Trim the fat off the ham....