Normal discharge should have only a slight odor and should never cause itching or burning.

正常情况下，分泌物仅仅是微臭，但不会引起瘙痒或者灼热感。

youdao

When the show began, the contestants, though hugely overweight, had normal metabolisms for their size, meaning they were burning a normal number of calories for people of their weight.

节目开始时，参赛者虽然严重超重，但是新陈代谢水平对他们的身材来讲是正常的，也就是说，他们静止时燃烧的热量对于他们那个体重的人来说，属于正常值。

youdao

Car in idle state is not fully burning gasoline, the emissions of harmful substances is a normal 5-6 times when traveling.

汽车在怠速状态下汽油燃烧很不充分，其有害物质排放量是正常行驶时的5 - 6倍。

youdao

These new models of failed supernovae demonstrate how both normal brightness and extremely dim supernovae are generated from the same basic picture of a nuclear-burning white dwarf star, he added.

FORBES: When A Supernova ... Fizzles