a belt-and-braces policy providing double security,in case one security measure should fail 不要搞笑好不好，一对一翻译谁要~

a belt-and-braces policy providing double security,in case one security measure should fail 不要搞笑好不好，一对一翻译谁要~
a belt-and-braces policy
providing double security,in case one security measure should fail
不要搞笑好不好，一对一翻译谁要~

a belt-and-braces policy providing double security,in case one security measure should fail 不要搞笑好不好，一对一翻译谁要~
providing double security,in case one security measure should fail
a belt-and-braces policy
也就是提供双重保障的意思