胸腺嘧啶 [ㄒㄩㄥ ㄒㄧㄢˋ ㄇㄧˋ ㄉㄧㄥˋ; xiong1 xian4 mi4 ding4] thymine nucleotide (T, pairs with adenine A 腺嘌呤 in DNA) ◄ ►