to step firmly (on)
to harden by treading
彼は雪を踏み締めた。
He firmly stepped on the snow.
彼は岩場を慎重に踏み締めて歩いた。
He carefully planted his feet on the rocky path and walked.
選手はスタートラインで地面を強く踏み締める。
The athlete firmly plants their feet on the ground at the starting line.