Galileo is the only contemporary personage, the only seventeenth-century figure, even so much as mentioned in Paradise Lost.
伽利略是唯一的一个当代人物,唯一的一个17世纪的人物,甚至在里也提到了这点。
So what we'll talk about next week, we'll revisit it again in lesson 7, lesson 17 and lesson 24.
所以我们下周所讲的内容,我们将在第7课,第17课和第24课里,再回顾一遍。
And, here, I've got 17 protons in the nucleus.
对于氯,它的原子核里有17个质子。
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