Stratostat
平流层气球
🗣️ 情景例句
Of Course. Easy. No sweat.
当然 小事情。绝无问题。
Moderation in all things is the best of rules.
中庸之道是最好的准则。
and that is one of the things the young are busily engaged in seeking.
这正是年轻人所热衷追求的。