Unserviced
无人看管的
🗣️ 情景例句
You and Dad are like ships that pass in the night.
你和爸爸就像在夜晚交错而过的船一样。
Old acquaintance will soon be remembered.
故人一见便相亲。
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。