Not easily.
Cut and paste your descriptions onto a text document.
Go to eBaydotCA and paste the descriptions into the appropriate box.
There are enough differences between the two sites that almost everything else may have to be redone.
Remember that on dotCA you can still sell in US dollars, which has the benefit of being understood by everyone in the world (and Americans understand nothing else.)
And when you complete the shipping section, use metric measurements. Canada Post went metric in 1974 and anything else will be inaccurate.