L-
[医][=a compound structurally related to l-glyceraldehyde]（化学前缀）左型（与d-相对构型）, 碳水化合物中表示具有与l-甘油醛同样的构型者为l-构型族
🗣️ 情景例句
Don't worry.
别担心。
Mr. Jones is a renowned international authority on the problem of overpopulation in developing countries.
琼斯先生在发展中国家人口过剩问题方面是声誉卓著的国际权威。
The lorry was loaded with empty beer bottles and hundreds of them slid off the back of the vehicle and on to the road.
卡车上装着空啤酒瓶。成百只瓶子顺势从卡车后面滑出车外落在马路上。