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。
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。
Practicing with a non-native person will give you practice.
和非英语母语的人练习可以是一次练习的机会。
One of non-native speakers' biggest problems is being too shy to speak.
非母语口语者最大的问题是因为害羞而不敢开口。
Language for non-native speakers to learn, there is no shortcut to follow.
非母语的语言学习，没有捷径可循。
Work in a setting that requires high level use of your non-native language.
在一家对当地语言能力水平要求很高的单位工作。
Work in a setting that requires high level use of your non-native language.
在对你的外语水平要求较高的环境里工作。
Work in a setting that requires high level use of your non-native language.
在严格要求使用非母语的环境中工作。
When we non-native speakers of English talk, it is much easier to understand.
而我们这些非英语母语人士所说的话，要容易理解得多。
We are really used to (familiar with) hearing non-native speakers of English speak English.
我们已经很熟悉非英语母语的人说英语了。
We are really used to (familiar with) hearing non-native speakers of English speak English.
我们已经很熟悉非英语母语的人说英语了。
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