238 篇文章
the mother must work tirelessly to raise her family.
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the mother must work tirelessly to raise her family. 母狐狸必须拼命觅食才能养活全家

Nonetheless, this female must incubate her eggs for three weeks
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Nonetheless, this female must incubate her eggs for three weeks 然而 雌雪雁必须花三周的时间孵蛋

As soon as couples arrive, they must stake a claim to a nesting patch.
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As soon as couples arrive, they must stake a claim to a nesting patch. 一对雪雁来了之后就必须取得自己的筑巢地

Even in spring, they must huddle together for warmth,
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Even in spring, they must huddle together for warmth, 即使在春天 小企鹅们也必须挤在一起

He must now put his chick at risk. In these temperatures it could freeze in seconds.
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He must now put his chick at risk. In these temperatures it could freeze in seconds. 它现在要让小企鹅冒险, 在这种温度下 小企鹅随时有可能冻死

He must avoid the stabbing tusks if he is to win.
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He must avoid the stabbing tusks if he is to win. 它必须躲开戳过来的象牙才能取胜

With the herd retreating to water, the bear must move quickly.
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With the herd retreating to water, the bear must move quickly. 象群开始往水里撤退,熊必须迅速出击

There must be a chink in the armour somewhere.
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There must be a chink in the armour somewhere. 一定在什么地方有破绽

Exhausted from his swim, the bear must regain his strength.
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Exhausted from his swim, the bear must regain his strength. 游得精疲力竭的北极熊必须恢复体力

If you choose to nest in the open, you must be prepared for a fight.
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If you choose to nest in the open, you must be prepared for a fight. 选择了空旷地筑巢也就必须做好厮杀角逐的准备