any of the substances in the blood that help it to clot (= become thicker and form almost solid masses) 凝血因子 More Like This Compound nouns with –ing formsCompound nouns with –ing forms- airing cupboard
- answering machine
- asking price
- baking powder
- betting shop
- boarding school
- booking office
- bowling alley
- breathing space
- breeding ground
- changing room
- clotting factor
- cutting room
- draining board
- drinking water
- eating apple
- housing estate
- icing sugar
- living room
- meeting place
- nursing home
- punching bag
- racing car
- sleeping pill
- starting point
- tuning fork
- waiting room
- working party