放射性同位素

radioactive isotope / radioisotope

to put / to place / to release / to free / to let go / to let out / to set off (fireworks)

to radiate / radioactive

old variant of 射[she4]

to shoot / to launch / to allude to / radio- (chemistry)

radioactive

nature / character / property / quality / attribute / sexuality / sex / gender / suffix forming adjective from verb / suffix forming noun from adjective, corresponding to -ness or -ity / essence / CL:個|个[ge4]

like / same / similar / together / alike / with

see 衚衕|胡同[hu2 tong4]

par

position / location / place / seat / classifier for people (honorific) / classifier for binary bits (e.g. 十六位 16-bit or 2 bytes) / (physics) potential

isotope

raw silk / white / plain, unadorned / vegetarian (food) / essence / nature / element / constituent / usually / always / ever