求flash高手解释这句代码：this._y = this._y-this.speed

求flash高手解释这句代码：this._y = this._y-this.speed Flash中if( this.x > this.stage.stageWidth - 80 )这行代码什么意思 flash中的_parent和 _root和this怎么使用,求详细解释 This goddamn net speed对吗 求 微积分y"_y＇-6y=0的通解 x根号3_y=0的倾斜角 this.rnum = Math.random()*100+10;这句什么意思啊,在代码中起什么作用? flash mc上的AS为on (release) {this._parent.i = this._parent.i+1 this this. this is the way flash伴奏 连词成句 car,this,find,Icontrol,to,difficult,high,speed,at