Haas
(HAA 的复数) abbr. 重型防空武器（Heavy Anti-Aircraft）
🗣️ 情景例句
One picture is worth a thousand words.
百闻不如一见。
The first step to virtue is to abstrain from vice.
不作恶是走向美德的第一步。
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。