也许海雀还不能飞，但其他的发明家仍在努力。
Maybe the Puffin can't fly yet, but other inventors are still trying.
也许海雀还不能飞，但其他的发明家仍在努力。
The Puffin may never fly, but other inventors are tinkering.
我好不容易才双脚离地，还不能飞太快(也许就是5英里一小时)，我也不能轻易地转弯。
I could barely get off the ground, I couldn't go very fast (maybe 5 miles per hour), and I couldn't turn easily.
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