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1·Childhood obesity is not just personal diet and physical health problems, but a cultural lag phenomenon.

儿童肥胖不仅仅是个人的饮食和身体健康问题，而且是一种文化滞后的现象。

2·Unless there's some cultural shift afoot, however, New York will continue to lag behind metropolises from Mexico City to Moscow.

然而，除非发生一些文化上的转变，否则纽约将继续落后于从墨西哥城到莫斯科的大都市。

3·But several factors restrict the realization of reasonable and orderly migrating of rural labor such as low cultural quality and lack of skills and conception lag behind and etc.

但由于农村劳动力文化素质不高、技能缺乏、观念落后等，严重制约着其合理有序转移。

4·As mentioned above, We must lag stress on selection of planting sites and improvement of cultural measures, especially selection of frost-resistant...

应注重宜林地的选择及栽培措施的改进，抗寒品种是关键。