Then he drew himself upon his plank and swam, doubling his speed.
He talked about 'doubling it' and said that two could play at that game!
I cast him off, and, doubling my body, I kicked at the ceiling.
Then, doubling the last point of the island, she disappeared all at once.
They lost no time in doubling the line and passing the ends out of the window.
Doubling the ...