underground railroad

同根派生

• underground railroad相关词

英汉例句

用作名詞 (n.)

• There was not an underground in Beijing before.
  北京從前沒有地下鉄道。
• The construction of underground railways has eased traffic pressure on the ground.
  地下鉄道的脩建減輕了地麪交通的壓力。

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