The outer portions of the float shoe are made of steel and generally match the casing size and threads, although not necessarily the casing grade.

浮鞋的外壁由钢制成，且一般与套管的尺寸和丝扣匹配，然而浮鞋的钢级不一定要与套管钢级一致。

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The outer portions of the guide shoe are made from steel, generally matching the casing in size and threads, if not steel grade.

引鞋的外部由钢制成，一般与套管的尺寸和螺纹匹配，如果钢级不匹配的话。

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Shoe: Outer covering for the foot, usually of leather, with a stiff or thick sole and heel, and generally reaching no higher than the ankle (unlike a boot).

鞋：人脚的保护性外套，通常以皮革制成，具有坚厚鞋底和鞋根，高度一般不超过足踝(与靴类有别)。

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The Second Circuit court, though, also decreed that Christian Louboutin retains the exclusive right to use the color red on the bottom of its shoes whenever the outer portion of the shoe is any color besides red.

FORBES: Both Sides Claim Victory In YSL v. Louboutin Shoe Case