1 to add oil

2 to top up with gas

3 to refuel

4 to accelerate

5 to step on the gas

6 (fig.) to make an extra effort

7 to cheer sb on

1 oil

2 fat

3 grease

4 petroleum

5 to apply tung oil, paint or varnish

6 oily

7 greasy

8 glib

9 cunning

1 stone

2 classifier: 块 kuài

1 soy sauce

1 diamond

2 classifier: 颗 kē

1 to kill two birds with one stone (idiom)

1 lit. the other mountain's stone can polish jade (idiom); to improve oneself by accepting criticism from outside

2 to borrow talent from abroad to develop the nation effectively

1 lit. to strike a stone with egg (idiom); to attempt the impossible

2 to invite disaster by overreaching oneself

1 solid as a boulder (idiom); absolutely secure

2 rock-firm and unyielding

1 as solid as rock (idiom); as sure as houses