海面上没有设置标志，也没有浮标来标出界限。
No signs or buoys will be placed on the surface of the ocean to mark the boundaries.
这个方法在搜索控件中设置标志，以指定将要执行的获得某一对象的搜索操作。
This method sets a flag in the search controls to specify that a search is being carried out to fetch an object.
交通标志是交通安全设施的一种，合理地设置标志有利于交通安全。
Traffic sign is a kind of road safety appurtenances. Rational layout of the sign is beneficial to road safety.
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