1. （绳等形成的）圈，环
    A loop is a curved or circular shape in something long, for example in a piece of string.

loop的翻译

    e.g. Mrs. Morrell reached for a loop of garden hose.
           莫雷尔太太伸手去拿绕成圈的花园浇水用的软管。

2. 把（绳等）打成圈（或环）
    If you loop something such as a piece of rope around an object, you tie a length of it in a loop around the object, for example in order to fasten it to the object.

loop

    e.g. He looped the rope over the wood...
           他把绳子绕到木头上。
    e.g. He wore the watch and chain looped round his neck like a medallion.
           他将链表绕挂在脖子上，就像戴了一枚大奖章。

3. 打环；成圈
    If something loops somewhere, it goes there in a circular direction that makes the shape of a loop.

    e.g. The enemy was looping around the south side...
           敌人正从南侧包抄过来。
    e.g. The helicopter took off and headed north. Then it looped west, heading for the hills.
           直升机起飞后向北飞行，接着又兜向西边，朝山那边飞去。

4. 属于/不属于圈内人士
    If someone is in the loop, they are part of a group of people who make decisions about important things, or they know about these decisions. If they are out of the loop, they do not make or know about important decisions.

loop什么意思

    e.g. I think that the vice president was in the loop...
           我认为副总统是局内人。
    e.g. These activists don't want to feel out of the loop.
           这些活跃分子不想做局外人。