| A | B |
|---|
| sprint | n. a short footrace at top speed; v. to run at top speed for a short time. |
| marathon | n. 1. a footrace that covers 26 miles, 385 yards (41.3 kilometers). 2. any race or contest that lasts a long time. |
| endurance | n. the ability to keep going in spite of harsh conditions or strain. |
| accelerate | v. 1. to go faster. 2. to make to go faster. |
| traction | n. the friction, or grip, between a moving object and the surface over which it moves. |
| flail | v. to wave or swing with power or force. |
| trail | n. a path or track through something like a forest; v. to follow or lag behind; to be behind. |
| hurtle | v. to move very fast, often with noise. |
| collapse | v. to fall down suddenly. |
| retain | v. to keep; to hold onto. |
