Welded structure
[化] 焊接结构
🧩 词语组成解析
v. 焊接；使结合（weld的过去分词）
🗣️ 情景例句
Where should we look for a house, Mrs. Martinelli?
我们应该到什么地方找房子， Martinelli太太？
I'm leaving tomorrow,but I haven't packed my suitcases yet.
我明天将离开，但是我还没收拾好行李。
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。