1. She sat with one elbow resting on the sill of the open window.
    她坐在那儿，一只胳膊肘搁在开着窗的窗台上。

2. sill的近义词

2. He fell from the window sill and put his shoulder out.
    他从窗台下摔了下来，跌得肩膀脱了臼。

1. sill

1. 岩床：改造而成的谷地称冰蚀岩基(batholith)是侵入体中规模最大的一类(图7.8),面积大于岩株(stock)是一种常见的侵入体,平面上近圆形或不规则状,接触面岩床(Sill) 又称岩席,是厚度较小而面积较大的层间侵入体,

2. 窗台：lock 门锁 | sill 窗台 | pot 冷水壶

3. 基石：silky 丝的 | sill 基石 | sillabub 乳酒冻

4. sill：strategy inventory for language learning; 语言学习策略量表

1. 窗台;窗沿
    A sill is a shelf along the bottom edge of a window, either inside or outside a building.

    e.g. Whitlock was perched on the sill of the room''s only window.
           惠特洛克坐在房间里仅有的那扇窗户的边沿上。

1. structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure

2. (geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock