Article 1

• Life expectancy（寿命）
• At an unprecedented（空前的）pace
• Demographic（人口学的）change
• Be prone to health problems（有...的倾向）
• Affect a society adversely（不利地）
• Raise the pension eligibility age（提高养老金门槛）
• Have an adverse（不利的）impact on sth
• Exacerbate（使恶化）the problem
• Impose a strain（施加压力）

Article 2

• Comparative（相比较而言的）advantages
• Natural endowment（先天优势）
• Fill unmet（未满足的）demands
• Intensify（加强）the competition in the market
• Market growth is stagnant（停滞的）
• The downside（缺点）of sth is that ...
• A classical example is that ...

Article 3

• Sth can be counterproductive（适得其反的）in some cases