All tickets purchased are not refundable or returnable .

所有的票券在购买后不可退款或退还.

Goods sold are not refundable , returnable or .

出售商品不接受退款，退货或换货。

Measurement of the microgravity levels in 1990 chinese returnable satellite .

1990年中国返回式卫星的微重力水平监测。

Goods sold are not returnable , exchangeable or refundable .

商品不可退回，交换或退还。

Returnable bottles and cans ; sale merchandise is not returnable .

可回收的瓶子和铁罐；售出的商品不得退回。