Contragradient transformation
[计] 逆步变换, 反步变换
🧩 词语组成解析
[计] 逆步的
🗣️ 情景例句
Robbie! Who is it? Robbie
是谁呀？
Can you imagine what it would be like to live without electricity?
你能想象出生活中没有电会是怎么样的一种情形吗？
What they had in fact found was a ship which had been sunk many years before.
事实上，他们发现的是另一艘沉没多年的船。