Traditional breeding methods led to slow progress of the breeding because of its long time breeding and lack of breeding germplasm resources. Gene engineering breeding has attracted more and more attentions of researchers in various countries.

Heilongjiang Province is located in the Alpine region. For its cold weather, tree growth is slow. To breeding a new fast and strong resistance varieties of poplar is important to solving the shortage of wood, poplar decline in quality, the lack of new varieties.

黑龙江省地处高寒地区，气候寒冷，树木生长缓慢，选育速生抗逆性强的杨树新品种，对解决木材短缺，杨树品质下降，新品种缺乏等问题具有积极的作用。

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Over a lifetime of around 35 years, female pandas typically only successfully raise five to eight cubs, so their slow breeding rate prevents the population from recovering quickly.

一只大熊猫一般能活35年左右，但雌性大熊猫一生中只能成功养育5-8个幼崽。低繁殖率使大熊猫无法快速恢复原有数量。

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The giant pandas'naturally slow breeding rate prevents a population from recovering quickly from illegal hunting, habitat loss, and other human-related causes of mortality.

大熊猫自然繁殖的比率很低限制了种群的快速恢复，来自非法猎取，产地损失，还有其他人为因素影响死亡率。

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Prices are sky-high at the moment.

眼下物价高得上了天。

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And sky-high property prices are one of the key indices prompting authorities to take measures to cool down the economy.

高的楼价是促使官方采取减缓经济措施的一个关键指标。

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The photographer who risks his life from sky-high buildings to take incredible photos of the world below.

冒着生命危险，摄影师从耸天高楼上拍摄了惊人的相片，表现脚下的世界。

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The critics gave sky-high praise to the drama.

批评家们把那部戏剧捧上了天。

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Everything is going their way: sky-high gas prices, a weak economy and a deeply unpopular president.

所有一切都正按其路径发展：天价高的油价，经济疲软，很不得人心的总统。

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Taxesare sky-high, infrastructure is poor and profit margins are razor thin.

税收奇高，基础设施落后，利润空间又非常稀薄。

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Sky-high oil prices are likely to lead over time to a massive substitution away from oil, even in China.

随着时间的推移，石油天价可能导致石油替代品的大规模使用，甚至是在中国。

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Investors also looked again at the sky-high valuations of Chinese companies – so the decline gathered speed.

投资者还再次将目光放到了中国企业的天价估值&于是下跌加速。

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The sky-high euro would soar further, choking off Europe's growth.

欧元将进一步升值，这将制约欧洲的经济增长。

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As college students set their sights on starting their own companies and earning sky-high salaries.

当大学生将目标设定在自建公司、赚取极高的薪水时。

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In a city suffering from worsening inequality, sky-high home prices are a key political issue.

在一个不平等程度日益加深的城市，房价高企是一个关键的政治问题。

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A sky-high pile of clean laundry might seem an ominous task.

洗干净的衣服堆成一堆，要整理收拾似乎是很无趣的工作。

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Interest rates are sky-high at the moment.

此时的利息很高。

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Business confidence is sky-high at the moment.

眼下商业信心非常高涨。

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House prices are sky-high this year.

今年的房价是天价。

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Cotton ought to go sky-high next year!

明年的价格一定很高！

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The decision-making leaders are also concerned with the sky-high annual salary.

天价薪酬也引起了决策高层的关注。

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