приличного размера(Corey Sturrock and his wife had been out for a walk when they spotted something very large in the water. (...) He described the creature as 'eel-like' but also 'the size of a bus'. (...) "By the time I got my phone out it had gone underneath again." As for what the creature was – Corey is skeptical that it was a literal monster but believes that it could have been some sort of large eel that lives in the loch. "Whatever it was it was some size," he said.unexplained-mysteries.comART Vancouver)
да, примерно так(used to show your agreement with someone who has said something correct:"So you mean you won't come to the party with me?" "Yes, that's about the size of it." That is the way it is. (Often a response to someone who has acknowledged bad news.) Bob: We only have a few hundred dollars left in the bank. Sally: That means that there isn't enough money for us to go on vacation? Bob: That's about the size of it. Bob: I'm supposed to take this bill to the county clerk's office and pay them four hundred dollars? Sally: That's about the size of it. Bullfinch)