1.   Cover early plantings with polypropylene row-cover material to retain warmth and protect against cabbage-root maggots.

2.   I kept my jacket hood over my head to retain warmth.

3.   It will protect you from wind chill and storm exposure, and help you retain your warmth.

4.   To retain warmth in the icy evening air, both covered themselves in their ponchos.

5.   The dwellings are reputed to be cool in the hot summer and retain warmth from stoves in the cold winter.