【思路分析】SVO=大熊猫+是(它的)徽标,可依“主系表”结构译出;一看到“自从”就应该想到since,since作为介词,后面要跟名词结构,所以“自从……以来”可译作介词短语“since the founding of WWF in 1961”或处理为从句“since 1961 when WWF was founded”,置于句首或句末均可。
【参考译文 1】Since the fund was established in 1961, the giant panda has been its logo.
【参考译文 2】The fund has been using the giant panda as its logo since its establishment in 1961.