Four decades ago, 40 percent had foreign language skills. Research by Australian universities has shown that a monolingual country often performs worse in international trade and diplomacy.

• 40年前，40%25的人都懂得外语。一个澳大利亚大学发起的调查显示：单一语种国家通常在国际贸易和外交上表现略逊一筹。