英语听力：自然百科 黄石公园的夏天 Yellowstone—16

 Bison calves¹ are more independent of their mothers. The adults' focus is now set on a ruthless competition to mate. A male bids to enter a herd² with females in season. He uses dust to accentuate³ all his size and power.

 

Another male already established in the herd, answers the display, and waits. 

 

The newcomer responds by scent⁴ marking and moving even closer.

 

This challenge can not be tolerated.  

 

The resident male has won. Having seen off his rival, next summer's calves will likely be his-------victory in the dust of high summer. But now there's a larger challenge to the whole of Yellowstone. These clouds don't signal rain.

1 calves   

n.(calf的复数)笨拙的男子，腓；腿肚子( calf的名词复数 )；牛犊；腓；小腿肚v.生小牛( calve的第三人称单数 )；（冰川）崩解；生（小牛等），产（犊）；使（冰川）崩解

参考例句：

• a cow suckling her calves 给小牛吃奶的母牛
• The calves are grazed intensively during their first season. 小牛在生长的第一季里集中喂养。 来自《简明英汉词典》

2 herd   

n.兽群，牧群；vt.使集中，把…赶在一起

参考例句：

• She drove the herd of cattle through the wilderness.她赶着牛群穿过荒野。
• He had no opinions of his own but simply follow the herd.他从无主见，只是人云亦云。

3 accentuate   

v.着重，强调

参考例句：

• She has beautiful eyes, so we should accentuate them in the makeup.她眼睛很美丽，我们在化妆时应该突出她的眼睛。
• Mrs Obamas speeches rarely accentuate the positive.奥巴马夫人的演讲很少强调美国积极的一面。

4 scent   

n.气味，香味，香水，线索，嗅觉；v.嗅，发觉

参考例句：

• The air was filled with the scent of lilac.空气中弥漫着丁香花的芬芳。
• The flowers give off a heady scent at night.这些花晚上散发出醉人的芳香。