Definition: a movement that you make against something with your hand, a pen, brush, etc. Level: C2
他用刷子快速画了一笔。
He made a quick ___stroke with the brush.
画家画笔的每一笔都为肖像增添了细节。
Each ___stroke of the painter's brush added detail to the portrait.
她用笔一挥，签署了合同。
With a single ___stroke of the pen, she signed the contract.
