Because CURL provides a stream interface, connectivity is transparent from a program's perspective.
由于CURL将提供流接口，因此从程序的角度来看，连接是透明的。
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Helios provides transparent access to services executing on satellite kernels by extending a traditional message-passing interface to include remote message passing.
As Linux presents a common interface to the file systems (through the virtual file system switch [VFS]), the user's perspective of Ceph is transparent.