yico/resources/lang/zh_TW/filament-panels.php

<?php

return [
    'layout' => [
        'actions' => [
            'theme_switcher' => [
                'system' => [
                    'label' => '系統主題',
                ],
                'light' => [
                    'label' => '亮色主題',
                ],
                'dark' => [
                    'label' => '深色主題',
                ],
            ],
        ],
    ],
];