lithotomy的复数形式为：lithotomies...

doghouse的复数形式为：doghouses...

boarding school的复数形式为：boarding schools...

makeweight的复数形式为：makeweights...

bean的复数形式为：beans...

extortioner的复数形式为：extortioners...

bookseller的复数形式为：booksellers...

hummingbird的复数形式为：hummingbirds...

burglary的复数形式为：burglaries...

petitioner的复数形式为：petitioners...

network的复数形式为：networks...

epicentre的复数形式为：epicentres...

ejection的复数形式为：ejections...

championship的复数形式为：championships...

admonishment的复数形式为：admonishments...

emulsifier的复数形式为：emulsifiers...

barilla的复数形式为：barillas...

magnate的复数形式为：magnates...

dick的复数形式为：dicks...

ashtray的复数形式为：ashtrays...

rebel的复数形式为：rebels...

butterfish的复数形式为：butterfish...

ward的复数形式为：wards...

academy的复数形式为：academies...

plastic的复数形式为：plastics...

yearbook的复数形式为：yearbooks...

grassland的复数形式为：grasslands...

sensitivity的复数形式为：sensitivities...

fire的复数形式为：fires...

mend的复数形式为：mends...