湖面上，那只小天鹅紧紧跟随在母天鹅身后游弋。
The little ___cygnet swam closely behind its mother in the lake.
湖面上，几只毛茸茸的小天鹅跟着它们的父母游弋。
The lake was dotted with fluffy ___cygnets following their parents.
公园的池塘里有一群小天鹅跟着它们的父母游水。
The park pond had several ___cygnets following their parents in the water.
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