介词后面加句子吗~The WHO is dedicating World Health Day to healthy environments for children,to call attention to what it says are these needless,preventable deaths.后半句,call attention to 的 to 后面的 what it says are these needless,preventable deaths 是个句子哇,怎么理解呢.

介词后面加句子吗~
The WHO is dedicating World Health Day to healthy environments for children,to call attention to what it says are these needless,preventable deaths.
后半句,call attention to 的 to 后面的 what it says are these needless,preventable deaths 是个句子哇,怎么理解呢.