| 词组 | obstacle |
| 释义 | 1．obstacle 指一个一个的障碍，并不是抽象名词，如可以说 He has conquered a great many obstacles，不可说 He has conquered a great deal of obstacle. 2．obstacle 后面接 to 和名词或动名词。例如：This is an obstacle to progress.和 There are many obstacles to learning a language from conversation. |
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