介绍:
1.The challenge is to keep your concentration, to constantly look.
2.They scan everything from heavy bushes to open grasslands, hoping to catch sight of her.
3.Chris must wait to see if the mother cheetah will let him back into her trust.
4.The man must drive as quickly as possible in order to get the shot.
5.If another predator moves in on her, the mother could be ambushed.
