Biopsy channel should be in the rangeofoperation and avoid of affecting sentinel lymphatic channels.
操作通道应该位于手术切除范围，同时要尽量避免前哨淋巴结引流通道。
2
When problems occur, they are usually due to clear overloading or underloading; but a relatively wide rangeofoperation is possible between these extremes.
通常出现问题是过载或欠载引起的，但是在允许值之间的相对范围是比较宽的。
3
The proximity detection feature allows a large rangeofoperation for accurate distance detection, such as in a cell phone when the user positions the phone close to their ear.