And mangroves are important to our coastlines because it's our first line of defense against any extreme or increased weather systems that come through.

红树林对海岸线很重要，因为它是抵御极端天气或提升天气防护系统功能的第一道防线。

Only the United States has such an extreme system of winners and losers, in which new buyers face borrowing costs of 7.5 percent or more while two-thirds of existing mortgage holders pay less than 4 percent.

只有美国有这种输赢很极端的体系，在这个体系中，新购房者面临着7.5%或更高的借贷成本，而三分之二的已经买房的人的利率不到4%。