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

<?php

return [
    '该试课已下架' => 'This trial course has been removed from the shelves',
    '预约失败' => 'Reservation failed',
    '下单失败' => 'Order failed',
    '您已经购买过此课程' => 'You have already purchased this course',
];