Panama is the ideal place to transship black-market arms to a guerrilla force up north.要将黑市出售的武器转载装船运给北方游击队，巴拿马是理想转运地。The landlords forced up the rents.房东们强行提高房租。In recent years, increased demand has forced up the price of copper on world markets.近年来铜的需求量增加，这抬高了它在世界市场上的价格。Prices have been forced up by the poor crop.因庄稼歉收物价有所上升。