地基检测器曾尝试在地球上探测引力波，但至今尚未成功，而且其只能检测频率相当高的引力波。
Ground based attempts to detect gravitational waves on Earth have so far been unsuccessful and can only look for gravitational waves with relatively high frequencies.
如果连接未成功，则会显示错误消息，并提供GUI尝试连接的详细信息。
If the connection is unsuccessful, an error message will appear with the details of the connection the GUI tried to make.
Google也有类似的低调尝试，它提供PageSpeedService，将网站提供者所有的页面通过Google的服务器传递，优化这些页面，但是并未成功。
Google has had a similar modest attempt by offering the page Speed Service which optimizes provider's websites delivering pages out of their own servers, but without much success.
统一英语拼写的尝试从未成功过。
Eg: Attempts to standardize English spelling have never been successful.
统一英语拼写的尝试从未成功过。
Eg: Attempts to standardize English spelling have never been successful.
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