n.开垦地，清除；清理；出清

The clearance between the engine piston and cylinder wall is crucial for smooth operation.
发动机活塞与气缸壁之间的间隙对于平稳运行至关重要。
The customs clearance process can sometimes be a lengthy one, especially for international shipments.
海关清关过程有时可能会很长，尤其是对于国际货物运输。
The pilot requested clearance to land at the airport due to poor visibility.
飞行员因能见度低请求机场着陆许可。
The store is offering huge discounts on clearance items to make room for new stock.
商店正在对清仓商品提供大幅折扣，以便为新货腾出空间。
The bridge has enough clearance for even the tallest ships to pass under.
这座桥的高度足以让最高的船只通过。
The company needs to obtain regulatory clearance before launching the new product.
公司在推出新产品前需要获得监管机构的批准。
After receiving safety clearance, the amusement park ride was reopened to the public.
在收到安全许可后，游乐园的游乐设施重新对公众开放。
The hiker had to navigate through dense foliage with minimal clearance on the narrow trail.
徒步者不得不在狭窄的小径上穿越茂密的植被，几乎没有多余的空间。
The sports car's low clearance makes it challenging to drive on uneven roads.
跑车的低底盘使得在不平的道路上驾驶颇具挑战性。
The software update requires system clearance from the IT department before installation.
软件更新在安装前需要得到IT部门的系统批准。