形容詞 bilateral:

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

1. Having or marked by bilateral symmetry.
   左右對稱的以或表現(xiàn)為左右對稱的

bi.lat.er.al

adj.（形容詞）
Having or formed of two sides; two-sided.
雙邊的：有或形成兩邊的；雙邊的
Affecting or undertaken by two sides equally; binding on both parties:
雙邊的，雙方的：由雙方共同影響或承擔的；雙方受約束的：
例句：
a bilateral agreement; bilateral negotiations.
雙邊協(xié)定；雙邊談判

Having or marked by bilateral symmetry.
左右對稱的：以或表現(xiàn)為左右對稱的

【引伸】
bilat.eralism
n.（名詞）
bilat.erally
adv.（副詞）
bilat.eralness
n.（名詞）