Some things that everyone wants to do cannot be portably done.
有些人们非常希望实现的事情却不可移植。
It's occasionally desirable to perform some sort of task beyond the scope of what can be done portably in make.
有时候可能还需要执行一些make中没法移植的内容。
This results in a difficult situation: fairly commonly used features, such as including other files in a makefile by reference, cannot be done portably!
这就导致出现了一种复杂的情况：很常用的'一些特性，例如在makefile中通过引用来包含其他文件，都不能很好地移植！
The portable and pneumatic seeder is small in volume and is capable of being used portably and realizing the farmland seeding in hillside or foothill areas.
本实用新型体积小、可以手提使用，能够在山坡或丘陵地带的实现农田播种。