Both of them, I may say, are thoroughly reliable men.

　　可以說，他倆都是絕對可靠的人。

　　It's very difficult to give a reliable estimate

　　要給出可靠的估計非常困難。

　　The service here is, in the main, reliable.

　　這里的服務(wù)基本上是可靠的。

　　Our information comes from a reliable source.

　　我們的消息來源可靠。

　　He's not very reliable, but I like him just the same.

　　他不太可靠，但我還是喜歡他。