boundary mark
常见例句
- Stakes mark the boundary of his ranch.
大牧场以树桩为分界。 - The drift of industrial boundary is the important mark of industrial convergence.
产业边界漂移是产业融合的重要标志。 - A wireless communications device with positioning capabilities is used to mark a boundary of a virtual operations area, and used to mark one or more obstacles within the boundary.
使用具有定位能力的无线通信装置来标记虚拟操作区域的边界且使用其标记所述边 界内的一个或一个以上障碍。
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