They laugh so hard they double up with laughter.他们捧腹大笑，直不起身来。The carpet won't double up.这地毯不能折起来.The lids of the casserole dishes are designed to double up as baking dishes.砂锅的盖子被设计成可兼作焙盘。...
他们呼吁达成新的捕鱼协议来拯救棱皮龟.They are calling for new fishing agreements to save the leatherback turtles.棱皮龟是世界上最大型的海龟.Leatherbacks are the world's largest turtles.他们警告说,如果还保持现有的捕鱼方法不变,那么世界上的棱皮龟将会绝迹.They warn that leatherback...