The polling method may have delays due to response availability and polling cycle.

由于响应可用性和轮询周期，轮询方法可能有延迟。

youdao

In general, the report notes that response times and availability of the major social networks has improved across the board this year.

FORBES: Connect

"A key test, however, will be the extent to which greater borrower appetite materialises in response to better credit availability, " he added.

BBC: For Sale signs

Warranty service availability and response times may vary from country to country and may also be subject to registration requirements in the country of purchase.

ENGADGET: Samsung shows off LTE-packing netbooks at MWC