Of course it's a good thing when someone learning a foreign language tries to use it without fear of making mistakes, but I don't think much of people without sufficient ability producing language learning material of poor quality.
当然,当有人学习外语时试图使用它而不必担心犯错误,这是一件好事,但我认为没有足够能力的人不会产生质量差的语言学习材料。
They're self sufficient.
他们是自给自足的。
I have not yet collected sufficient materials to write a book.
我还没有收集到足够的材料来写一本书。
For the intelligent, a hint is sufficient.
对于聪明人来说,暗示就足够了。
There are sufficient grounds for believing he is honest.
有充分的理由相信他是诚实的。
Life is the art of drawing sufficient conclusions from insufficient premises.
生活是从不足的前提中得出足够结论的艺术。