Walking alone should be "walking alone", which means that a person walks slowly alone and describes loneliness, loneliness and loss of mood. Licorice, pronounced jiéjué, refers to the larvae of mosquitoes that feed on bacteria and unicellular algae in water.

Example of "old":

1, Frogs not only eat mosquitoes, flies and swallows in the water, but also prey on agricultural pests such as moths and rice planthoppers.

2. In the smoke rolling, Guan Wen saw one bony shadow after another, stepping on the wall powder.

3. The researchers put the larvae of the underground house mosquitoes into a glass container, and added copper coins to the container. Soon all the larvae of the underground house mosquitoes died.