[]文本align="center", 对齐方式无效，无论设置什么值，都是左对齐

var txtCountDown = new Laya.Text();
txtCountDown.fontSize = 30;
this.rankSprite2.txtCountDown = txtCountDown;
this.rankSprite2.addChild(txtCountDown);
txtCountDown.text = 15;
txtCountDown.pivotX = txtCountDown.width/2;
txtCountDown.align = "right";
txtCountDown.pos(this.rankSprite2.width / 2, 483);