We had to dig deep to find enough money to pay a deposit for our new car. 我们不得不 “掏光腰包”，才够付新车的定金。 To make it to the summit of the mountain, we had to dig deep and find extra energy to help get us there ...

HEFEI, Sept. 4 (Xinhua) -- The future development of deep space economy is expected to focus on the sectors such as energy, internet, tourism and cultural creativity, with global market scale reaching ...