It has an empty content model because of its empty xs: sequence element.

它有一个空的内容模型，因为它的xs： sequence元素为空。

youdao

Elements with an empty content model always use the empty tag abbreviation .

带有空内容模型的元素总是使用空标记缩写。

youdao

Empty content of the message input box so that the user can start typing another message.

保持输入文本框为空，便于用户在此输入信息。

youdao

It feels redundant, and tends to underscore the empty caloric content of what passes for information on Facebook.

FORBES: Facebook slices meaningless data a little finer, outraging millions