a.

1. 不生育的；不結果實的[Z]
   He had learnt early in his marriage that he was sterile.

   他結婚不久便得知他不能生育。

2. （植物）只具雄蕊的；雌雄蕊俱無的[Z]
3. 貧瘠的
4. 消過毒的，無菌的[Z]
5. 枯燥乏味的；無生氣的
   a sterile style

   呆板的文體

6. 無效果的，無結果的

adj.

1. not able to produce children or young.
   ▸(of a plant) not able to produce fruit or seeds.
   ▸(of land or soil) too poor in quality to produce crops.
2. lacking in imagination, creativity, or excitement.
3. free from bacteria or other living microorganisms.