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1·They have an extra heavy burden to bear.

他们需要背负更重的担子。

2·Extra heavy duty aluminum stair treads available upon request.

特重型铝楼梯板要求提供。

3·Does the luggage you take on vacation feel extra heavy these days?

这些日子外出度假有没有感觉行李特别沉？

4·However carpet comes in two basic grades - heavy and extra heavy duty.

这是因为地毯有两种基本的等级-厚型或者加厚地毯。

5·The reservoir belongs to the huge massive block extra heavy oil reservoir.

油藏类型为巨厚块状特稠油油藏。

6·Its extra heavy duty bearings are designed to maximize its operational life.

其额外的重型轴承的设计最大限度地发挥它的运行寿命。

7·You may have noticed that you feel extra heavy, lethargic, that you feel gravity’s pull is greater.

你可能已经觉察到那时候的你感到非常沉重，昏昏欲睡，感觉地心引力都变得更大。

8·You may have noticed that you feel extra heavy, lethargic, that you feel gravity's pull is greater.

你可能已经觉察到那时候的你感到非常沉重，昏昏欲睡，感觉地心引力都变得更大。

9·Suitable for sewing leather, canvas, tents, waterproof fabric etc all kinds of extra heavy materials.

适用于缝制皮革、帆布、帐篷、防水布等各种极厚素材。

10·The combinable extra heavy full trailer can meet the transportation demands for the over weight, over length and over height cargo.

超重型可拼装式全挂车可满足超重、超长、超高货物的运输要求。