scan是什么意思

scan

英 [sk?n] 美 [sk?n]

scan 仔細看，掃描——細看

scan 標出詩歌的韻律，察看，瀏覽，掃描

來自拉丁語 scandere,攀爬，攀登，來自 PIE*skand,爬，跳，詞源同 ascend,descend.字母 d 脫落，比較 lawn,land.引申詞義標出詩歌的韻律，即標出詩歌的抑揚頓挫，并進一步引申詞義仔細看，檢查，察看，瀏覽，后用于指掃描，且成為主要詞義。

scan: scan: [14] Latin scandere meant ‘climb’ (it has given English ascend and descend). In the postclassical period it was used metaphorically for ‘analyse the rising and falling rhythm of poetry’, and it was in this sense that it passed into English as scan. It was broadened out semantically to ‘examine’ in the 16th century, and to ‘look at widely’ in the 18th century. The Latin past participle scansus formed the basis of the noun scansiō, from which English gets scansion [17].
=> ascend, descend, scandal
scan (v.): late 14c., "mark off verse in metric feet," from Late Latin scandere "to scan verse," originally, in classical Latin, "to climb, rise, mount" (the connecting notion is of the rising and falling rhythm of poetry), from PIE *skand- "to spring, leap, climb" (cognates: Sanskrit skandati "hastens, leaps, jumps;" Greek skandalon "stumbling block;" Middle Irish sescaind "he sprang, jumped," sceinm "a bound, jump").

Missing -d in English is probably from confusion with suffix -ed (see lawn (n.1)). Sense of "look at closely, examine minutely (as one does when counting metrical feet in poetry)" first recorded 1540s. The (opposite) sense of "look over quickly, skim" is first attested 1926. Related: Scanned; scanning.
scan (n.): 1706, "close investigation," from scan (v.). Meaning "act of scanning" is from 1937; sense of "image obtained by scanning" is from 1953.

3. Their approach is to scan every checked-in bag with a bomb detector.: 他們的方法是用炸彈探測器對每一個辦理了登機手續的箱包進行掃描。

4. I had an ultrasound scan to see how the pregnancy was progressing.: 我進行了超聲波檢查，看看妊娠情況如何。