A large proportion of sushi, which combines raw fish or vegetables with cooked vinegared rice, contains farmed shrimp, prawns or salmon.
Due to climate change, rising sea temperatures led to a drop in anchovy catches in Peru, according to reports.
The cost of the main feed for farmed fish has jumped by almost 50 percent in two weeks to reach a record high.
The increased costs are expected to be passed on to diners as restaurants and cafes serving sushi put up prices to maintain their margins.

大部分壽司都是用生魚肉或蔬菜搭配上醋飯制作而成，其餡料有養(yǎng)殖的小蝦、明蝦或三文魚。
據(jù)報道，由于氣候變化，海水溫度上升導(dǎo)致秘魯?shù)镍P尾魚捕撈量減少。
養(yǎng)殖魚類的主要飼料造價在兩星期內(nèi)上漲了50%，達(dá)到歷史新高。
預(yù)計成本增加將間接影響到到食客們，因為餐館和供應(yīng)壽司的咖啡館會提高價格以維持利潤。

【注解】
文中的sushi就是“壽司”的意思，是日本傳統(tǒng)美食（delicacy）之一，以低的熱量（low calories）、有機(jī)的食材(organic ingredients)受到越來越多人的喜愛，需要注意是，不要將壽司和“刺身”（sashimi）混為一談哦。
最后一段中的margin作名詞時，意為“邊緣；利潤”，如：gross margin (毛利)，the margin of a forest (森林的邊緣)。