I began to concentrate all of my research on birds and their songs.

  • 我开始集中精力研究鸟和鸟的歌声.

  • 词典精选例句 2025-01-19 22:41:03

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句