The toddler began to shay as he took his first steps.

幼児は初めての一歩を踏み出すときによろめき始めた。

I had to hold onto the rail as the bus began to shay on the bumpy road.

バスがでこぼこ道で揺れ始めたので、私は手すりにつかまらなければならなかった。