是什么导致了早期美国例如电报、蒸汽船和织布机的重大发明的大量涌现?
What accounts for the great outburst of major inventions in early America—breakthroughs such as the telegraph, the steamboat and the weaving machine?
富勒的重大发明之一是底灯,她站在一格磨砂玻璃上,照明的光来自下方。
One of Fuller's major inventions was underlighting, in which she stood on a pane of frosted glass illuminated from underneath.
这算不上重大发明,只是对输入方面施加了限制。
This is not some marvelous invention - it is a simple, imposed limitation on the input field.
They do the big step of inventing vowels so that now you don't have to remember anything.
他们在发明元音方面迈出重大一步,所以现在你不必去费力记忆
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