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- Swallows are insectivorous. 燕子以虫为食。
- Swallows are the forerunners of spring. 燕子是春天来临的前兆; 燕子是报春的鸟。
- Swallows are nesting in the garage. 燕子正在汽车房做窝.
- The swallows are nesting in the woodshed. 燕子正在木棚里筑巢呢。
- So soon as swallows are flying seen. 燕子飞时。
- The swallows are flying back in the spring. 春天燕子从南方飞回来。
- Swallows are darting through the air. 燕子在空中掠过.
- Swallows are flying backwards and forwards. 燕子穿梭飞来请作答!!
- Swiftlets are insectivorous and feed on airborne insects and arthropods. 基于这样的腿部，金丝燕在没有栖息的时候只有不停的飞翔。
- The swallows are building a nest under the roof of our house. 燕子正在我们的屋檐下筑巢。
- Swallows were darting through the clouds. 燕子穿云急飞。
- Dryden says in his poem, "Swallows are unlucky birds to kill. 英国十七世纪诗人德莱顿在诗中写道，“杀燕子不吉利。”
- Swallows are good at flying, they are acrobatic fliers. 燕子很擅长于飞行，它们是杂技飞行家。
- Magpies or purple swallows are all greatly delighted. 喜鹊紫燕都在欢天喜地。
- The swallows were skimming the water. 燕子掠过水面。
- Seven swallows were caught near their nest. （人们）在燕窝附近捉了七只燕子。
- Of the 21 local species two are fruit bats, one is a piscivore fish-eating and the remainder are insectivorous. 21个本地蝙蝠品种中,两个属于果蝠,一种以鱼为食粮,其馀捕食昆虫维生。
- The swallows were skimming over the water. 燕子掠过水面。
- Swallows were darting through the air. 燕子在空中穿飞。
- The swallows were dipping back and forth. 群燕来回翻飞。
