现在，让我们来看一个自然捕食者的具体例子，它会对珊瑚礁造成很大的伤害——那就是刺冠海星。
Now let's focus on a specific example of a natural predator that can cause a lot of damage to coral reefs—the Crown of Thorns, or CoT starfish.
有一种假说认为，这是一种自然现象；在特别适合产卵的那几年后，刺冠海星自然会经历种群数量的波动。
One hypothesis is that it's a natural phenomenon, that the starfish naturally undergo population fluctuations following particularly good spawning years.
对于诸如冰冠融化和温室效应等重大问题，政府和大公司有责任采取必要的措施。
For major issues such as the melting ice caps and the greenhouse effect, governments and large companies are duty-bound to take necessary measures.
新加坡公用事业局（PUB）负责人叶庆冠（YapKheng Guan）解释说，“我们的水要么太多，要么太少。”
"We have either too much water or too little, " explains Yap Kheng Guan, a director of Singapore's PUB.
正确洗手能很好地预防新冠肺炎。
Washing hands properly is a good way to prevent us from COVID-19.
他在抗击新冠疫情方面表现出色。
我看过电影《我们都是抗击新冠肺炎的斗士》。你呢，彼得？
I have seen the film We Are All Fighters against the COVID. What about you, Peter?
顺便问一下，你接种新冠疫苗了吗？
她在新冠肺炎研究方面取得了巨大成就。
She has made great achievements in the research on COVID-19.
你有在新冠肺炎疫情期间做过志愿者吗？
Have you ever worked as a volunteer during the COVID-19 pandemic?
为了远离新冠肺炎，我们最好接种疫苗。
疫苗接种是阻止新冠病毒传播的有效方式。
Vaccination is an effective way to stop COVID-19 from spreading.
国际社会应携起手来，共同抗击新冠肺炎疫情。
It is important for the whole world to pull together against COVID-19.
别急。我们一定会在抗击新冠肺炎中取得胜利。
Don't be impatient. We're sure to win the fight against COVID-19.
中医药在治疗新冠肺炎中一直发挥着重要作用。
Traditional Chinese medicine has been playing an important role in treating COVID-19.
中国正在努力帮助更多发展中国家抗击新冠肺炎。
China is making an effort to help more developing countries fight against COVID-19.
4月26日，武汉最后一名新冠肺炎患者出院了。
Apr 26: The last Covid-19 patient in Wuhan was discharged from hospital.
此后，中药在抗击新冠肺炎疫情中发挥了重要作用。
Ever since then, traditional Chinese medicine has played an important role in the fight against COVID-19.
由于新冠肺炎，我不能回家，但你不需要为我担心。
Because of COVID-19 (新冠肺炎), I can't go home, but you don't need to worry about me.
在抗击新冠肺炎疫情的战斗中涌现了一批超级英雄。
Here are some superheroes in the fight against COVID-19 (新冠肺炎).
不久前，他们都自愿加入了抗击新冠肺炎疫情的队伍。
Both of them volunteered to take part in the battle against COVID-19 not long ago.
医学研究人员将在未来找到成功战胜新冠病毒的方法。
Medical researchers will find a way to beat COVID-19 successfully in the future.
由于新冠肺炎疫情，中国的很多学校推迟了开学时间。
A lot of schools across China put off starting classes because of COVID-19.
在新冠肺炎疫情期间，我们有必要在公共场合佩戴口罩。
It's necessary for us to wear masks in public places during the COVID-19 period.
他们为了抗击新冠肺炎而努力工作，以至于忘记了自己。
They worked so hard against the COVID-19 that they forgot about themselves.
今年，成千上万的医务工作者离开家去与新冠肺炎抗争。
This year, thousands of medical workers left their homes to fight the COVID-19 (新冠肺炎).
3月11日，世界卫生组织正式宣布新冠肺炎为大流行病。
On March 11, World Health Organization (WHO) officially characterized COVID-19 as a pandemic.
3月11日，世界卫生组织正式宣布新冠肺炎为大流行病。
On March 11, World Health Organization (WHO) officially characterized COVID-19 as a pandemic.
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