Non-native species can appear harmless for decades, then turn invasive.

非本地物种可能会在几十年内看起来无害，继而变得有入侵性。

A non-native plant chokes out native plants by hogging the nutrients in the soil.

一种非本地的植物通过占用土壤中的养分来扼杀本地植物。

What is more, non-native species can appear harmless for decades, then turn invasive.

更重要的是，非本地物种可能会在几十年内看起来无害，然后变得有入侵性。

The ecosystem down there can't handle this non-native species. It's destroying the environment.

当地的生态系统并不能应付这个外来物种。它正在摧毁我们的环境。

Non-native speakers now outnumber native English-speakers by three to one.

目前，在讲英语的人中，非英语母语人士和英语母语人士的比例是3比1。

Williams also warns pet owners not to release non-native pets into the wild.

威廉姆斯还提醒养宠物的人不要把非本土产的宠物放归野外。

Non-native plants sometimes threaten native species by using up nutrient resources.

有时，非本地植物通过耗尽营养资源而威胁本地物种。

So what does it mean when non-native speakers of a language outnumber native speakers?

如果某种语言的非母语使用者超过母语使用者，意味着什么？

Invasive and non-native plants can make their way into the local ecosystem this way.

这样，那些入侵性的或是那些外来的植物就会以各种办法进入当地的生态系统。

With the new policy, non-native students in Beijing are exempted from sponsorship fees.

根据新政策，非京籍学生不再需要缴纳赞助费。

I don't got to classrooms, since I don't want to be confused by other non-native speakers.

因为我不想被其他讲非母语的人搞迷糊了，所以我没去上过外语课。

It tests the preparedness of non-native English speakers for university-level studies in English.

该英语考试主要考察英语非母语者进入大学学习的准备情况。

On the other hand, when jokes work, they can be a huge success with a non-native speaking audience.

而另一方面，当笑话起作用时，它们会为你在英语非母语人中带来巨大的成功。

Mr Graddol says the majority of encounters in English today take place between non-native speakers.

葛拉多尔表示，如今大多数英语交流发生在非英语母语人士之间。

In Hawaii a non-native bird called a Japanese white-eye robs nectar from the base of a haha‘aiakamanu.

一只被称为日本绣眼鸟的外来鸟类正从桔梗花的底部采食花蜜。

I came to appreciate through my work that there are good people in both the Native and non-Native world.

我通过我的工作了解到，不论是原住民还是非原住民中，都有好人。

Try a few out with your non-native speaking audience; you will soon learn which ones are worth repeating.

试着给非母语听众讲几个笑话后，你会很快明白哪些是值得重复的。

She says her team has noticed that non-native speakers are varying standard English grammar in several ways.

她表示，她的团队注意到非英语母语人士在几个方面改变着标准英语语法。

The great benefit of learning other languages is that you have some idea of what non-native speakers are up against.

学习其它语言的一大好处就是你可以对其它非母语人士的问题有所了解。

Furthermore, calreticulin retains proteins in non-native conformation within the er and targets them for degradation (2, 3).

此外，在内质网中，钙网蛋白以非天然构象保存，并对其进行靶向降解(2,3)。

It is also common for non-native speakers to use "which" for humans and "who" for non - humans (" things who "and" people which ").

非英语母语人士对人用“which”，对物用“who”(“things who”与“people which”)，这种情况也很常见。

People like the fact that it's wild food - and also that if you are eating a non-native crayfish you are helping to save England's own.

事实上人们喜欢这种野生食品，而且如果你食用这些非本土的虾蟹，就帮助节省了英伦本土的资源。

Nouns that are not plural in native-speaker English are used as plurals by non-native speakers (" informations ", "knowledges", "advices").

非英语母语人士将英语母语人士视为没有复数形式的名词以复数形式使用(“informations”，“knowledges”，“advices”)。

Britain has signed up to the official EU goal of teaching all schoolchildren two non-native European languages, but is resolutely monolingual.

英国已与欧盟签订协议，以使所有小学生学习两门英语之外的欧洲语言，可现在这沦为空谈。