1.How many Avocet there?

1.究竟有几多只呢？

2.But Colonel-General Kurt Zeitzler insisted that the offensive go ahead and he became the main avocet of the offensive.

2.但是主战的库尔特·蔡兹勒上将坚持对库尔动进攻。

3.An avocet has a long, strongly upcurved bill which contains a complex and highly specialized system of lamellae capable of filtering out small food items.

3.找了一路上的资料，似乎也没有讨论他嘴上弯原因的文献，可能有很久以前的，不过就不太好找了。