A low-power, wide-angle telescope fixed to the body of a more powerful telescope and pointed in the same direction for initially locating an object to be observed.
寻星镜一种低功率大视野的望远镜，附加在一台较大的望远镜上，为开始标出被观察的物体位置而指向同一方向
initially the contract will be in effect for... years.
最初契约的有效期为。。。年。
She came initially to spend a few days, but in the end she stayed for a whole month.
起先她只打算来待几天，但後来却住了整整一个月。
