If not, it sets the POST data to an empty string.

如果没有，POST数据设为空字符串。

youdao

If the list were originally empty, you call pthread_cond_broadcast to post push data into the list.

如果列表原来是空的，就调用pthread_cond_broadcast以宣告列表中已经添加了数据。

youdao

You call it an "empty envelope" to emphasize that it should eventually contain a "letter" (perhaps a business letter) before you can send it by "post".

称其为“空envelope”是为了强调在通过“投递”发出它之前，它最终应该包含一封“信”(也许是商业信)。

youdao

Community colleges' honors programs, usually half-empty,have, in the Post's words,exploded.

VOA: standard.2009.12.14

Community colleges' honors programs, usually half-empty, have,in the Post's words,exploded.

VOA: standard.2009.12.10

In the 16th minute, McAlister dispossessed Wallace but ended up sending his cross to an empty back post.

BBC: Sport - Football - Hamilton Accies 0-2 Hearts

Almost a year ago, Beijing activist Xu Zhijun launched Operation Empty Plate, an online campaign aimed at cutting restaurant waste across China, by asking followers to post photos of empty plates to his website.

BBC: Play your part in the global food crisis

Abdullah is running for deputy president, a post left empty when former deputy premier Anwar Ibrahim was jailed for abuse of power two years ago.

CNN: The New Malay Dilemma