blast

英 [blɑːst] 美[blæst]

复数: blasts;第三人称单数: blasts;过去式: blasted;过去分词: blasted;现在分词: blasting;

1. 不能够持续就爆炸, 爆炸就是那种瞬间炸开的东西，而不是那种持续性的、慢慢的发生的那种情形。
2. 不持续就爆炸. 无法持续只能爆炸.
3. blast => clast: c‐开，炸开了岩石成碎屑.
4. 由b到c, 这是字母顺序关联性，因此clast可以看成是blast爆炸后的结果.

blast 爆炸

词源同blow.

blast (n.): Old English blæst "blowing, breeze, puff of wind," from Proto-Germanic *bles- (cognates: Old Norse blastr, Old High German blast "a blowing, blast," German blasen, Gothic blesan "to blow"), from PIE *bhle- "to blow," probably a variant of root *bhel- (2) "to blow, inflate, swell" (see bole).

Meaning "explosion" is from 1630s; that of "noisy party, good time" is from 1953, American English slang. Sense of "strong current of air for iron-smelting" (1690s) led to blast furnace and transferred sense in full blast "the extreme" (1839). Blast was the usual word for "a smoke of tobacco" c. 1600.
blast (v.): Old English blæstan "to blow, belch forth," from the root of blast (n.). Since 16c., often "to breathe on balefully." Meaning "to blow up by explosion" is from 1758. Related: Blasted; blasting. Blast off (n.) is attested from 1950.

1. The space shuttle had been scheduled to blast off at 04:38.: 航天飞机已经预定于凌晨4点38分发射升空。

2. The blast caused extensive damage, shattering the ground-floor windows.: 爆炸造成了巨大的破坏，震碎了一楼的窗户。

3. It's thought that the blast occurred when volatile chemicals exploded.: 人们认为，易挥发的化学物质爆炸时产生了冲击波。

4. The original planned launch was called off four minutes before blast-off.: 原定的发射在点火起飞前4分钟被取消。

5. British experts delivered a strong counter-blast to the Professor's claims.: 英国专家对该教授的断言进行了强烈驳斥。