There were no side rails to guide him.

桥边没有栏杆做引导。

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Upholstered head-boards, footboards and side rails of beds.

带有软垫的床头板，床尾板和侧板。

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The side rails should be held by two hands when climbing a fixed ladder.

爬固定梯子时，要双手握住两边的扶手。

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Abdul Jabbar raises the truck's side rails and fastens the latches.

NPR: 'The Swallows of Kabul' Book Excerpt

Two of these devices will eventually be placed side by side inside a larger stationary platform with guard rails around it.

ENGADGET: vi-RABT improves ankle rehabilitation with virtual reality and robotics

The delicate floral and cornucopia motifs carved on the crest rails of his earlier Federal period sofas and side chairs recall the work of the great woodcarver Samuel McIntyre of Salem, Mass.

WSJ: Duncan Phyfe | Furniture for a Young Nation | By Barrymore Laurence Scherer