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speedometer
A device that measures a vehicle's speed.
speedster
A person or vehicle that moves very fast.
speedway
A track for high-speed automobile racing.
speedy
Moving quickly; fast.
Speedy Gonzales
a person who is very fast
spell
To write or say the letters of a word.
spell out
詳細解釋、清楚說明
spellbook
魔法書
spellbound
Completely fascinated or enchanted.
spelling
The correct arrangement of letters in words.
spend
to pass time
spender
Someone who pays out a lot of money.
spenser
type of short, fitted jacket
sperm
精子
sperm donor
A man who provides male cells for making a baby.
Sperry
A brand known for boat shoes.
spew
To expel something forcefully or quickly.
SPF
A measure of sunscreen's effectiveness against sunburn.
sphere
球體, 球狀物
spherical
Having a completely round shape like a ball.
sphincter
a ring of muscle that closes an opening
sphinx
a mythical creature with a lion body and human head
spice
a dried plant part used to flavor food
spick and span
整潔乾淨的；一塵不染的