The expression more lenient (Para. 4) is closest in meaning to less severe.

更宽大一词(第4段)在意思上最接近不太严重。

A similar, less severe, metabolic disorder is congenital lactase deficiency.

类似的, 病症略轻为一点的代谢紊乱疾病是乳糖分解酶素缺乏症.

Still, it was only escape from a severe to a less severe state.

可是, 这只不过是从一个严峻的处境逃到一个不太严峻的处境罢了.

And if their child does develop eczema, it may be less severe.

即使她们的孩子患湿疹，病况也相对较轻。

EV71 virus intestinal infection most cases less severe diseases and incurable.

肠道病毒EV71感染大部分病例病情较轻，并且可治愈。

All the victims found the flu less severe and certainly briefer than a bad cold.

所有的患者的症状都没有想象中严重，连发病时间都肯定比严重感冒来得短暂。

Worry about the possibility of less severe, but still debilitating, recessions persisted.

然而，人们仍然担心会出现虽不那么严重但仍能使经济虚弱的衰退。

Conclusion:In delayed resuscitation after severe scalding, rapid fluid replacement will result in less severe myocardial damages than even fluid replacement.

结论：在烫伤后延迟复苏情况下， 快速补液可以减轻烫伤后早期心肌损害。

And the children in the probiotics group who did develop eczema had less severe symptoms overall.

并且益生菌组的所患有湿疹的症状总体上要比非益生菌组轻.

Less severe friction-induced heat damage can be found on inner cylinders during component overhaul.

在部件大修过程中还会发现内筒上出现不常见的严重的摩擦热损伤。