1. 對角線或對角面
   A diagonal line or plane.
2. 兵，小卒價(jià)值最小的棋子，一次可向前移一方格或在第一步可移兩格，只能吃對方靠對角線前方的一個(gè)子，當(dāng)到達(dá)第八級時(shí)可升為除王以外的任何一棋子
   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.

對的英語翻譯：

角線的英語翻譯：