The rich batten on the poor.
富人靠剥削穷人发财。
The threat of inflation has made many city institutions batten down hatches and not take risks in the stock market.
通货膨胀的威胁已使城市许多公共机构作好准备，不去股票市场冒险。
The hilly areas make good sheep pasture; sheep will batten on the lush grass.
这一带山区是很好的牧羊场，羊吃了茂盛的青草会长得肥肥的。
