1. 发酵：leader 前导区,前导序列 | leavening 发酵 | lecithin 卵磷脂

2. 酵母：leaven 酵素 | leavening 酵母 | leaver 离开者

3. 接种：leatherette 人造革 | leavening 接种 | leavening agent 疏松剂

4. (使)发酵：leavening (使)发酵 | leavening agent 发酵剂;膨松剂 | leavens (烟道气烘烟的)上层烟叶

noun

1. an influence that works subtly to lighten or modify something

e.g. his sermons benefited from a leavening of humor

Synonym: leaven

2. a substance used to produce fermentation in dough or a liquid

Synonym: leaven