Our ancestors discovered how to ensure a stable food supply. 我们的祖先发现了 确保食物稳定供应的方法
were not enough to ensure the future of the birds. 并不足以确保鸟类有一个光明的未来
to ensure that it is always available to meet our every demand. 来确保有足够淡水满足我们的需求
so the crew must ensure they have the full cooperation of the fishermen. 因此潜水团队必须确保得到渔民的全力配合
The hope is that this will ensure that over five million more eggs 希望这将确保500多万个海龟蛋
Once onboard, the waxy sides of the pitcher ensure there's little chance of escape. 当昆虫被引诱过来时 光滑的内侧唇瓣使得昆虫鲜有机会逃跑