invertebrate

無脊椎動物

Insects, worms, and jellyfish are all invertebrates.

昆蟲、蠕蟲和水母都是無脊椎動物。

無脊椎的

The museum has a huge collection of invertebrate fossils.

這間博物館收藏了大量無脊椎動物化石。

沒骨氣的、懦弱的貶義

He was too invertebrate to stand up to his boss.

他太沒骨氣，不敢跟老闆據理力爭。