200. To be of great interest --- to be very interesting

201. The virtue of sth--the advantage of sth/ the good of sth

202. Tolerate – stand / bear/ withstand

203. thorough – completely

204. Unfortunate --- unlucky

205. undergo—experience

206. unrelenting – insistent

207. ultimate goal – final goal

208. utilize – apply / use

209. We should be considerate and understanding. --- we should be thoughtful.

210. Would rather…than ----- prefer to do sth

211. worship – love

212. When it came to pollution problem-----when we talked about pollution problem

213. yield to – surrender