Wash the carrots and chop them into bite-sized pieces.
把胡萝卜洗净,切成一口大小的块。
Finely chop the onion so it cooks down evenly.
把洋葱切碎一些,这样能均匀地炒软。
"chop"=切(一般大小)。更碎是 "mince",切薄片是 "slice",切丁是 "dice"。