The act of clearing; removal of obstruction.

肃清；扫除；除去障碍。

A space cleared.

清除出来的空间。

A certificate permitting a vessel to leave port.

出港执照；出港许可。

The distance by which one object clears another; the space between the surface of a road and the underpart of a bridge overhead.

通过的空间，如路面至高架桥底部之间的高度空间。

Distance by which a moving part in a machine escapes touching another part.

【机】余隙。

Exchange of checks, drafts, etc. through a clearing house.

【商】支票或期票的交换。

Governmental authorization to permit access to classified information.

【政府】授权允许接触机密文件。