a. 不考虑的，不顾及的 　　A: Despite the dry weather, I am amazed at how many crops the farmers are growing. 　　B: That is because they have developed an extensive and efficient irrigation system. 　　irrigation 　　n. 灌溉 　　A: My little sister always irritates me. 　　B: Mine is also very annoying. 　　irritate 　　vt. 1.使恼怒，使烦躁;2.使(身体某部分)不适，使疼痛 　　A: Is Iran a Christian country? 　　B: No, it is Islamic. 　　Islamic 　　a. 伊斯兰教的，伊斯兰教信徒的 　　A: The isle where we camped was just one hour by boat off shore. 　　B: Were there any inhabitants on it? 　　isle 　　n. 小岛，岛 　　A: I’m itching to travel. 　　B: Perhaps you can go away following your studies. 　　itch 　　vi. 1.痒，发痒;2.渴望，热望 　　vt. 使发痒 　　A: Your necklace is very unusual. 　　B: That’s because it is made out of ivory. 　　ivory 　　n. 1.象牙;2.象牙色，乳白色 　　A: I need to cut back the ivy from my windows.