In the 1990s, when Copland was initiated, "next-generation" meant supporting memory protection and preemptive multitasking, both of which classic Mac OS lacked.
Copland始于上世纪90年代，“新一代”是指支持内存保护和抢先式多任务，当时的MacOS不支持这两项功能。
Unfortunately, the memory protection mechanisms of the x86 processors (the most common processors) don't easily support this; normally if a page is readable, it's executable.
遗憾的是，x86处理器(最常见的处理器)的内存保护机制无法容易地支持这点；通常，如果一个内存页是可读的，它就是可执行的。
The memory protection and share mechanism can improve the reliability of the system.
通过存储保护机制提高系统健壮性。
Furthermore, a Memory Protection Unit (MPU) has been added, which is transparent to existing software but allows new applications to protect specific code or data during execution.
此外，还增加一个存储器保护单元(MPU)，该功能虽然对于现有软件是透明的，但新应用软件在执行期间可以保护特定代码或数据。
Furthermore, a Memory Protection Unit (MPU) has been added, which is transparent to existing software but allows new applications to protect specific code or data during execution.
此外，还增加一个存储器保护单元(MPU)，该功能虽然对于现有软件是透明的，但新应用软件在执行期间可以保护特定代码或数据。
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