biennial

1.the party held its biennial convention.

该党召开了两年一次的大会。

2.The workers were strongly against the biennial election.

工烈反对两年一次的选举。

3.biennial yellow-flowered Eurasian plant having aromatic leaves used as carminative or flavoring agent;

两年生欧亚植物,花黄色,其叶芳香,用做祛风剂或调味品；