【正文】
① cost v價錢為,花費 ,代價;花費,費用 The cost of a loaf of bread has increased fivefold.. 一條面包的價錢增長了 4倍。t afford to buy a new car. 我們買不起新的車。 Education is playing a big part in environmental protection. 教育在環(huán)境保護中起著很大作用。 與 … 有關(guān),對 … 有影響 I39。 ③ used to do過去一向,過去時常,過去曾(而現(xiàn)在不再)做 Who used to do your laundry? 誰過去一直為你洗衣服? She used to wash dishes in a 館里洗過盤子。 Badges are also available at a cost of 163。 We can39。 He played a part in his favorite TV show. 他在他最喜歡的電視節(jié)目中扮演了一個角色。 ⑤ play a part in扮演某角色 。 ② harmful … 有害的;能造成損害的;不利;不良 Smoking is harmful to our health. 吸煙對人類的健康有害。. 徽章也