Oxidation catalyst
[化] 氧化催化剂
🧩 词语组成解析
oxidation
[[ˌɔksi'deiʃən]]
n. 氧化\\n[化] 氧化
🗣️ 情景例句
You just relax with Grandpa.
你只要放轻 陪爷爷就行了。
Like cures like.
以毒攻毒。
This is because they had no natural enemies until the arrival of humans and therefore did not need to develop flying wings.
这是因为人类到达这里之前，这些鸟没有天敌，因此，它们不需要发育飞行的翅膀。