He was permitted to go abroad with the proviso that he should return at the end of two years.
他被允许出国的条件是

必须回来。
词
想词
落;
,小部分,小单位,细分;He was permitted to go abroad with the proviso that he should return at the end of two years.
他被允许出国的条件是

必须回来。
声明:以上例句、词性分类均由互
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