spermicide

n substance that kills sperm 杀精子剂.

speleology (also spelaeology), spell, spellbinder, spellbinding, spellbound, speller, spelling, spelt, spelunker, spend, spend...time (in) doing, spender, spending, spendthrift, spent, sperm, sperm whale, spermaceti, spermatozoon, spermicidal, spew, sphagnum, sphere, spherical, spherically, spheroid, sphincter, sphinx, spice, spiced, spiciness, spick, spicy, spider, spider plant, spider-man, spidery, spied, spiel, spigot,