yueke/application/api/lang/en/ems.php

<?php

return [
    '操作成功' => 'Operation successful',
    '发送频繁' => 'Frequent sending',
    '已被注册' => 'Registered',
    '已被占用' => 'Occupied',
    '未注册' => 'unregistered',
    '发送成功' => 'Successfully sent',
    '发送失败' => 'fail in send',
];