And now the snakes are on the alert. 这些游蛇正虎视眈眈

150. Racer snakes.
     游蛇
151. The snakes miss their chance.
     游蛇错失了这次机会
152. But more babies are hatching.
     但还有更多的小鬣蜥将孵化而出
153. And now the snakes are on the alert.
     这些游蛇正虎视眈眈
154. This is the best feeding opportunity they will get all year.
     这是它们一年里最佳的捕食时机
155. On flat ground, a baby iguana can outrun a racer snake.
     小鬣蜥在平地上跑得比游蛇快
156. But others are waiting in ambush.
     但周围还有其他蛇在埋伏

来自《行星地球 第二季 第一集 Planet Earth S02E01 岛屿》第 153 行