扩大围栏

expanding universe───[相对][天物]膨胀宇宙；扩展宇宙

explain the science───解释科学

examine the evidence───检查证据

explain the difference───解释区别

expanding on───详述

expanding sector───扩大部门

expanding universes───膨胀的宇宙

expanding upon───详细叙述

expanding waistline───扩大腰围

At this moment , my husband is expanding the fence so the dog will not climb over it again.───此时此刻，我的丈夫是扩大了围栏，以便狗不会越过一遍。