158. at one’s convenience(=where and when it suits one) 在方便的时间或地点 .be convenient to　for 对…方便　­

157. under control (被)控制住 out of control无法控制　­

156. contribute to 有助于　­

155. in contrast towith 和…形成对比 by contrast 对比之下　­

154. contrast…with 把…与…相对(对照)　­

153. on the contrary 相反　­

152. contrary to (=in opposition to) 与…相反　­

151. be content with(=be satisfied with) 满足于be content to do sth. 愿意做某事　­

150. to one’s heart’s content尽情地,痛痛快快　­

149. consult sb. on about sth. 向…征求…方面的意见, 就…向…请教　­