The “teenagers” (15-19 years old) should mostly still be in school; if not, they are likely to be very low skilled – and thus to have difficulty finding a full-time job even in good times. Fortunately, this group is rather small (and has been declining in size over time).
首先，该数字覆盖年龄是15—24岁。但这一年龄段可以细分为两个性质迥异的子阶段。“十几岁”（15—19岁）应该大部分还在学校中；如非如此，则可能技能极低，因而即便在好光景时也难以找到全职工作。幸运的是，这一群体数量很小（并且随着时间的推移越来越小）。