pèi duì
to pair up
to match up
to form a pair (e.g. to marry)
to mate
matched pair
jiǎn jī pèi duì
base pairing (e.g. adenine A 腺嘌呤 pairs with thymine T 胸腺嘧啶 in DNA)
base pair
jiǎn jī hù bǔ pèi duì
complementary base pairing e.g. adenine A 腺嘌呤 pairs with thymine T 胸腺嘧啶 in DNA