如果你再研究一下为世界杯和职业联赛输送人才的欧洲国家青年队，你会发现这种奇怪的现象更加明显。

If you then examined the European national youth teams that feed the World Cup and professional ranks, you would find this strange phenomenon to be even more pronounced.

youdao

尽管医疗队一直在给工人们输送膳食补充剂，他们还是很可能缺乏维生素D（人体一般通过阳光制造维生素D），时间一长可能导致骨头和肌肉的衰弱，但是两个月的时间似乎不足以造成长期损伤。

(Your body normally manufactures Vitamin D with the help of sunlight.) Prolonged deficiency can cause bone and muscle weakness, but two months probably isn't enough to do long-term damage.

youdao

如果你再查看一下为世界杯和职业联赛输送人才的欧洲各国的国家青年队，你会发现这种奇怪的现象更加明显。

If you then examine the European national youth teams that feed the World Cup and professional ranks, you would find this strange phenomenon to be even more pronounced.

youdao