首先我们来看下departure from inward office of exchange的大致意思
departure from inward office of exchange：词性为短语，departure表示离开，from表示从某处，inward office of exchange指进口互换局，departure from inward office of exchange整体短语表示包裹或邮件从进口互换局离开，即离开该国家的邮局进入其他国家的邮局。
通过下面的图我们了解下departure from inward office of exchange的含义、发音和用法
接下来我们讲解几个用例，希望这些用例可以加深您的理解
departure from inward office of exchange：
My package has departed from the inward office of exchange.
(我的包裹已经离开进口互换局了。)
This letter has arrived at the office of exchange in the destination country.
(这封信已经到达目的地国家的邮局。)