send a message：向…发出明确信息，让别人明白某件事是对的或真实的，或者让别人明白你的态度。
    By taking this action, we are sending a message that bullying will not be tolerated.
    通过采取这一行动，我们发出了一个明确的信息：欺凌行为不糊被容忍。

    message：发信息
    I messaged him yesterday but haven’t had a reply.
    昨天我给他发了短信，但没有回音。

    text sb：给某人发信息
    I texted her to arrange a time to meet.
    我给她发了短信，和她约好见面时间。

    send-off：送别，送行
    We’ll have to give her a good send-off when she leaves the office.
    她离职的时候，我们得给她举办一个像样的送别会。

    sned sb packing：撵走某人；赶走某人
    There were some kids at the door asking for money but Anna sent them packing.
    门口有几个孩子要钱，但安娜把他们撵走了。

    send sb down：将某人关进监狱（英式表达）美式英语中：send sb up
    She was sent down for three years.
    她被判入狱3年。

    send sb down：（大学）开除某人，勒令（某人）退学
    She was sent down from Oxford for taking drugs.
    她因为吸毒被牛津大学开除了。