这些障碍物对于想要往上游游动的鱼儿来说是致命的。The barriers are lethal to fish trying to swim upstream.鲨鱼急速潜入水中，在船下游动。The shark dived down and swam under the boat.该广告的內容为一条在金鱼缸里游动的海豚.The advert featured a dolphin swimming around a goldfish bow...
The twinning of Leeds and St Mary was formalised at a function held last week.在上周举行的典礼上，利兹市与圣玛丽市正式缔结为姐妹城市。Gross crystalline imperfections like twinning are apparent to the unaided eye.粗的晶体不完整性,如孪生体可用肉眼看出.Identical twinni...