She pressed down hard on the gas pedal.
她用力踩下油门踏板。
He pressed down on the sack and it went under water.
他使劲一按，袋子沉进水里了。
The grass had been pressed down in place where people had been lying.
人们躺过的地方，草都被压平了。
The grass had been pressed down in places where people had been lying.
在人们躺着的地方草坪上的草都被压倒了。
The grass had been pressed down in places where people had been lying.
在人们躺着的地方草坪上的草都被压倒了。
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