Wedgelike
楔形的
??? 情景例句
that will bring parents and teachers together once a week
讓家長們及教師每星期一次
That's a liberal point of view.
那是一個開明的觀點。
This is because they had no natural enemies until the arrival of humans and therefore did not need to develop flying wings.
這是因為人類到達這里之前，這些鳥沒有天敵，因此，它們不需要發育飛行的翅膀。