Chem (effervescence)

If it is only an M.C. question, the answer is 1.

In chemistry , the term "effervescence" (泡騰) means a lot of bubbles are rapidly formed in a solution or in aliquid.

"effervescence" 沒有 "boil" 的意思！

2014-02-07 11:31:15 補充：
In simple terms, it is the result of the chemical reaction occurring in the liquid which produces a gaseous product.

(G. Liger-Belair et al., "Study of Effervescence in a Glass of Champagne", Am. J. Enol. Vitic. 50:3 (1999) 317–323)

答案是 1. situation that gases form vigorously only?

此字有 boil 的意思，強烈地放出氣體，但不必一定為 carbon dioxide。

http://en.wikipedia.org/wiki/Effervescence

2014-02-07 00:54:44 補充：
胡雪8°

閣下的名號很有意思，好名！好名。