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double; twice (as much)
times (as much); -fold
1-nth; 1 to n; 1 in n
二倍になって量が増えました。
It doubled and the amount increased.
レシピの二倍の分量が必要だ。
Double the amount is needed.
この本の値段は去年の2倍になりました。
The price of this book has become twice what it was last year.