sill

[sil]

n.基石(岩床底面)

例句与用法：

The lowest sill, block, or timber supporting a building, located at or below ground level.

底基用来支撑建筑物的最低的基木、砌块或木料，位于地面或低于地面的

The conditioned response, once it is firmly established, can be extinguished dozens of times, but it will always return, like the proverbial bad penny.

条件反射一经形成，虽然可以一次又一次地压制下去，但是它总会重新再现，真是摆也摆不脱扔也扔不掉。

A thin plank fastened to the side of a boat or to the sill of a port to keep out the sea and the spray.

挡水板，防浪板缚于船边或港基的薄木板。用来阻挡海水及其喷溅

Solidifying chiefly as a minor intrusion, especially as a dike or sill, before reaching the earth's surface. Used of rocks.

半深成的，浅成的在到达地球表面之前的主要作为小型岩石群固化的，尤其象岩脉或岩床的凝固用于指岩石

词形变化：

副词: silkily | 形容词比较级: silkier | 形容词最高级: silkiest | 名词: silkiness |

详细释义：

n.[C]

1. 【建】基石, 底木

2. 门槛; 窗台

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。

3. 【地】岩床; 海底山脊