O'Rell observed that “not to grasp the Perform is a pity; but not to produce a feeling when one particular is available in, dressed in 1’s most killing attire, is out from the concern.”手表是高精密仪器，因此有必要对它进行定期检查，替换磨损严重的部件，并更换机油。只要腕表的走时开始出现明显变