With me today is Neil. Hello, Neil. Hello, Rob（抢劫）. In this programme, we're going to be talking about coffee. Mmm, coffee. I've actually got one here in front of me, Rob.

  All right. What kind of coffee are you drinking? It's a skinny latte. And what's that that you've got? Well, I've gone for a flat white today. Mmm, that tastes good.

  Mmm, looks good too. The market for the world's most popular drink has come a long way since the days of instant（立即的） coffee, when we just added boiling（沸腾的） water to some brown powder（粉末）. Yes, that's very true, Neil. After that came the giants（巨人） like Starbucks and Costa Coffee, who made coffee drinking trendy and a lifestyle statement. People are far more aware（知道的） of what they're drinking these days. Mmm, but, Rob, I don't think we should forget what lies（躺） behind the coffee we enjoy every day.

  It's a hugely（巨大地） complicated（ 使复杂化） business. Yes, it's the second biggest commodity（日用品） in the world after oil. That means the price of coffee is changing every day, every hour even, as traders（商人） speculate（推测） about the price. And it means farmers in countries like Ethiopia, Costa Rica and Brazil are dependent（依靠的） on the deals（买卖） that are made in commodity（日用品） markets thousands of miles from their farms. It makes them extremely vulnerable（易受攻击的）. Let's listen to food journalist Sheila Dillon as she explains the impact（影响） of coffee markets on local growers（种植者）.

  She uses an expression that means 'has a big effect'. Can you tell me what it is? What happens in the coffee market makes waves around the globe（地球）. Entire（全部的） national economies（经济） depend on the price of coffee. It's the key to whether（ 是否） individual farmers can provide for their families, face unemployment（ 失业）, and ultimately（最后） whether（ 是否） whole communities stay on the land or trek to the cities. She said 'makes waves'.

  This means 'have a big effect'.