左括號
left parenthesis"(". {ASCII} character 40. Common names: left paren; left parenthesis; left; {open}; paren (")" = thesis); open paren; open parenthesis; left parenthesis; left banana. Rare: so (")" = already); lparen; {ITU-T}: opening parenthesis; open round bracket, left round bracket, {INTERCAL}: wax (")" = wane); parenthisey (")" = unparenthisey); left ear. Paired with {right parenthesis} (")"). (1995-03-06)