I've been studying all day, and I'm sick and tired of it.
我学了一天,现在感到厌倦。
The doctor said I looked run down.
医生说我看起来身体渐渐差了。
The price we pay for cheap food may be already too high: Mad Cow Disease (BSE) in cattle, salmonella in chicken and eggs, and wisteria in dairy products.