来自拉丁语 schedium,临时作品，来自希腊语 skhedios,临时做的，来自 PIE*segh,持有，握住， 想出，词源同 schema,scheme.引申诸相关词义。

sketch

sketch: [17] Sketch comes ultimately from Greek skhédios ‘impromptu’. This reached English by a rather roundabout route: via Latin schedius, which led to a Vulgar Latin verb schediāre ‘do hastily’, source of Italian schizzare ‘make a sketch’, which in turn produced the noun schizzo ‘sketch’, borrowed into English via German skizze or Dutch schets.

sketch (n.)

"rough drawing intended to serve as the basis for a finished picture," 1660s, from Dutch schets or Low German skizze, both apparently 17c. artists' borrowings from Italian schizzo "sketch, drawing," which is commonly said to be from Latin *schedius (OED compares schedia "raft," schedium "an extemporaneous poem"), from or related to Greek skhedios "temporary, extemporaneous, done or made off-hand," related to skhema "form, shape, appearance" (see scheme (n.)). But according to Barnhart Italian schizzo is a special use of schizzo "a splash, squirt," from schizzare "to splash or squirt," of uncertain origin.

Extended sense of "brief account" is from 1660s; meaning "short play or performance, usually comic" is from 1789. Sketch-book recorded from 1820. German Skizze, French esquisse, Spanish esquicio are likewise from Italian schizzo.

sketch (v.)

1690s, "present the essential facts of," from sketch (n.). Meaning "draw, portray in outline and partial shading" is from 1725. Related: Sketched; sketcher; sketching.

1. Use different colours of felt pen on your sketch to avoid confusion.

用不同颜色的毡头笔画草图，以免搞混。

来自柯林斯例句

2. The sketch should be a kind of rehearsal for the eventual painting.

草图应该是最终绘画的某种演练。

来自柯林斯例句

3. I had a basic sketch of a plan.

我有一个基本的计划框架。

来自柯林斯例句

4. I always sketch with pen and paper.

我总是用钢笔和纸画素描。

来自柯林斯例句

5. My sister often goes into the country to sketch.

我姐姐常到乡间去写生.

来自《简明英汉词典》