。
She knows nearly ten times as many English words as I do.
Literal
She [topic-は] my 10-times near many English-words [object-を] knows.
Combines the ~倍 multiplier with 近く ('nearly, close to') and 多く ('many'). 近く modifies 10倍 — 'nearly ten times' — using the い-stem of 近い. 多く serves as an adverbial 'much, a lot,' describing how many words. Stacking these adjuncts before the noun is unproblematic in Japanese — modifiers pile up freely on the left side of the noun. 英単語 ('English words / vocabulary') is a useful compound combining 英 ('English') + 単語 ('word, vocabulary item').