例文
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- In comparison, the common swift has a wingspan of around.
- Like common swifts, they are strongly migratory, and winter much further south in southern Africa.
- Also, bird species that breed in hollows, such as the common swift, are observed.
- The only other bird known to spend days and nights on the wing is the common swift.
- Alpine swifts are readily distinguished from the common swifts by their larger size and their white belly and throat.