tombstone

冲浪板直立半浸入水中,因冲浪者被绳索拉紧而呈现,通常表示遇险。

For a surfboard to stand upright half-submerged in the water (like a tombstone, above) because the surfer is underwater with his or her legrope pulled tight. Often this indicates a surfer in difficulty, either held down by the power of a wave or unconscious and unable to get to the surface.

用删除标记替换(对象或数据)。

To replace (an object or data) with a tombstone marker.