留意便宜货，但绝不要买表面凹陷的罐头。Watch out for bargains, but never buy dented cans.他凹陷的眼睛闪现出喜悦的光芒。His sunken eyes glistened with delight.他在凹陷的扶手椅上坐下了。He sat down in the sagging armchair....
To allow all extensions for a filetype, leave both of the arrays empty for that filetype.如果想允许一种文件类型的所有扩展名,只需将针对该文件类型的所有访问控制数组设为空即可.There are telephone extensions in every office.每间办公室都有电话分机.Extensions of n - echelon cat...