• n. 幻覺，錯覺；錯誤的觀念或信仰

il-,進入，使，-lus,玩樂，玩耍，詞源同ludic,elude,elusive.引申詞義玩弄，欺騙，虛幻。

illusion

illusion: [14] The notion of ‘play’ is at the etymological heart of illusion (as indeed of its close relatives allusion [16], delusion [15], and elude [16]). It came via Old French from Latin illūsiō, a derivative of illūdere ‘make fun of’. This was a compound verb formed from the prefix in- and lūdere ‘play’ (source of English ludicrous [17]). In classical Latin illūsiō meant ‘mockery’, and no semantic shift seems to have taken place until post-classical times, when it moved to ‘deceit’ (a sense originally taken over by English).
=> allusion, delusion, elude, ludicrous

illusion (n.)

mid-14c., "act of deception," from Old French illusion "a mocking, deceit, deception" (12c.), from Latin illusionem (nominative illusio) "a mocking, jesting, irony," from illudere "mock at," literally "to play with," from assimilated form of in- "at, upon" (see in- (2)) + ludere "to play" (see ludicrous). Sense of "deceptive appearance" developed in Church Latin and was attested in English by late 14c. Related: Illusioned "full of illusions" (1920).

1. Sloping walls on the bulk of the building create an optical illusion.

大樓主體的斜墻給人造成一種視錯覺。

來自柯林斯例句

2. She laboured under the illusion that I knew what I was doing.

她有一個錯覺，以為我知道自己在做什么。

來自柯林斯例句

3. This eerie calm is an illusion.

這種怪誕的平靜是一種假象。

來自柯林斯例句

4. The sun appears to go round the Earth, but it's an illusion.

太陽看起來好像繞著地球轉, 但這只是個錯覺.

來自《簡明英漢詞典》

5. The mirrors all round the walls give an illusion of greater space.

墻壁周圍的鏡子造成一種較大空間的假象.

來自《簡明英漢詞典》