The grapes are hardy and grow in big bunches , but they sometimes ripen unevenly and can contain a high amount of sugar .
这种葡萄耐寒，生长的时候结成一大串簇拥在一起，但有时它们成熟的快慢不一样，而且糖分的含量会很高。
But age and experience make too many older people cynical , while rising considerations of mortality can make even hardy souls melancholy .
但年龄和阅历使太多年长的人变得愤世嫉俗，随着对生死的顾虑加深，即使坚强的灵魂也会变得忧郁。
However worthy that sounds it 's unclear to me whether the baby-boomers who may be the first beneficiaries of such death - delaying drugs are hardy enough to endure the extra decades of nonlethal afflictions they will face instead .
