Marni: Oh!Rafael: What happened? Are you OK?Marni: I just saw a spider（我刚看见了一只蜘蛛！）.Rafael: Youve got to love spiders. Dont be afraid of them.Marni: Are you serious? I have arachnophobia（蜘蛛恐惧症）. I cant stand them!Rafael: They may be poisonous（有毒的）, but theyre also industrious（勤勉的，勤奋的）. Let me put it this way. I have tons of ants and flies in my house. The spiders will catch them for you and theyll eat them.Marni: Yeah, and so will chemicals.Rafael: I think spiders, in general, just get a bad rap（只不过名声较坏罢了）. Most of them are harmless, anyway.Marni: Hmm. I dont know. Theyre not all poisonous, but they sure can be creepy（让人毛骨悚然的）. Think about the big, hairy ones. And you travel internationally, and you see these spiders that youve never seen before. And you dont know if theyre poisonous. Some spiders could actually kill you. Its so creepy.Rafael: OK. One word, Marni. Biodiversity（生物多样性）. Its beneficial.Marni: I guess, but oh!