A chess piece of lowest value that may move forward one square at a time or two squares in the first move, capture other pieces only on a one-space diagonal forward move, and be promoted to any piece other than a king upon reaching the eighth rank.
分词翻译
对的英语翻译：
right; answer; reply; at; check; compare; couple; mutual; opposite; versus; vs face to face 【计】 P 【化】 dyad 【医】 Adv.; contra-; corps; ob-; p-; pair; par; para- 【经】 vs
