(particle equivalent to 啊 after noun ending in -n)[cedict]
which? (interrogative, followed by classifier or numeral-classifier)[cedict]
一
yīㄧ
one; 1; single; a (article); as soon as; entire; whole; all; throughout[cedict]
科
kēㄎㄜ
branch of study; administrative section; division; field; branch; stage directions; family (taxonomy); rules; laws; to mete out (punishment); to levy (taxes etc); to fine sb[cedict]