Circular function
圆函数, 三角函数
🧩 词语组成解析
🗣️ 情景例句
I don't think you're the right person for me.
我觉得咱们不合适。
Glad to have been of help.
我很高兴能给您帮个大忙。
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。