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1·There is a teensy-weensy little problem though.

不过还有一个很小很小的问题。

2·I may be doing most things that might seem not practical or too teensy weensy... I leave it to the reader to measure their own strides.

我可能做的大部分事情都看起来不实际或者过于微小…还是让读者衡量他们的步幅吧。