bilateral

形容词 bilateral:

1. having identical parts on each side of an axis
   同义词：isobilateral, bilaterally symmetrical, bilaterally symmetric
2. affecting or undertaken by two parties
3. having two sides or parts
   同义词：two-sided

1. Having or marked by bilateral symmetry.
   左右对称的以或表现为左右对称的

bi.lat.er.al

adj.（形容词）
Having or formed of two sides; two-sided.
双边的：有或形成两边的；双边的
Affecting or undertaken by two sides equally; binding on both parties:
双边的，双方的：由双方共同影响或承担的；双方受约束的：
例句：
a bilateral agreement; bilateral negotiations.
双边协定；双边谈判

Having or marked by bilateral symmetry.
左右对称的：以或表现为左右对称的

【引伸】
bilat.eralism
n.（名词）
bilat.erally
adv.（副词）
bilat.eralness
n.（名词）