否则，它循环遍历绑定向量数组，寻找非null的绑定句柄指针。

Else, it goes through the binding vector array looking for a non-NULL pointer to binding handle.

youdao

可能会在这里构造一个循环，但是这与R的功能和面向向量的操作不一致。

You could construct a loop here, but that feels at odds with r's functional and vector-oriented operations. Instead, the trick is to use the function apply .

youdao

差别在于这个处理是由循环包围的，该循环迭代跨越已声明语言所保存的向量。

The difference is that the process is wrapped by a loop that iterates across the saved vector of declared languages.

youdao