We can see that any leading or trailing Spaces are removed, then the + signs are escaped to remove potential interference with the regular-expression search.
我们可以看到所有前导空格或后置空格已被删除，然后+号被转义以删除用正则表达式搜索的潜在干扰。
Its main concern in banning calls in the air has been potential interference with cell-phone use on the ground.
在飞行期间禁止使用手机打电话主要考虑到的是，可能会干扰地面手机通讯。
Its main concern in banning calls in the air has been potential interference with cell-phone use on the ground.
在飞行期间禁止使用手机打电话主要考虑到的是，可能会干扰地面手机通讯。
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