expand develop open up
They opened up large areas of wasteland and turned them into farmland.
他们在荒原上拓出大片农田。
—— 给力词典精选People here are reclaiming land from the sea.
这儿的人们正在填海拓地。
—— 给力词典精选Astronomical research began to spread over the whole range of electromagnetic waves.
天文研究开始向整个电磁波谱范围延拓。
—— 辞典例句The associated topology is the constructible topology on X.
相应的拓扑是X之上 的可构造拓扑。
—— 辞典例句Khan, Tamerlans in the fury of conquest exterminated all who resisted them.
成吉思汗, 塔马兰在狂热的开疆拓土中消灭了所有反抗他们的人。
—— 辞典例句