Triassic acid
[化] 三叠酸
🧩 词语组成解析
a. 三叠纪的
🗣️ 情景例句
at ten o'clock tomorrow morning.
明天上午十点钟。
It's quite an intersive few days.
那几天可真紧张。
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。