When I invested my money with the company I was told it was as safe as the RockofGibraltar.
我投资这家公司时，他们说它像直布罗陀巨岩一样可靠。
《牛津词典》
2
They believe in God, and that means they believe he exists in objective reality, just as surely as the RockofGibraltar exists.
他们信奉上帝，这意味着他们相信上帝存在于客观现实中，就像对直布罗陀巨岩的存在一样确信。
3
He did not try to plant a Spanish flag atop the limestone outcrop that gives Gibraltar its nickname of “the Rock”. Nor did he renounce a centuries-old battle to regain sovereignty.