Settlers made agreements with Native American cheifs but always broke them afterwards.
殖民者同美洲土著人的首领达成了协议,但是这些协议随后总是被撕毁。
The farmer cut off part of his foot to make sure he could not run away again.
农场主把他的一只脚砍掉了一块,以确保他不能再逃跑。
Professor Karl von Frisch, an Austrian scientist, spent many years of his life researching the amazing ways honey bees communicate in their dark hives.