| 单词 | 用于防御的 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔carve〕Some of the tunnels in the cliff are natural, some were carved out (= cut into the rock) by soldiers for defensive purposes.峭壁中的一些隧道是天然形成的，一些是士兵们在石头上开凿出来用于防御的。剑桥高阶Some of the tunnels in the cliff are natural, some were carved out (=cut into the rock) by soldiers for defensive purposes.峭壁上的一些隧道是天然形成的，一些是由士兵们在石头上开凿出来，用于防御的。剑桥国际 |
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