When at last the wings reached their fullest the four swans took off and joined the hovering group.

当翅膀最终完全展开后，4只天鹅回到了自己的队伍中。

youdao

When at last the wings reached their fullest the four swans took off and joined the hovering group.

当翅膀最终完全展开后，4只天鹅回到了自己的队伍中。

youdao