The usefulness of cow-peas and soy-beans as human food has been recognized only recently in this country.

The usefulness of cow-peas and soy-beans as human food has been recognized only recently in this country.

豇豆和大豆作为人类食品的作用直到最近才在这个国家得到承认。

-- David F. Houston 大卫·F·休斯顿