視頻對(duì)話：
...About what?
……為了什么？
The situation is very fluid.
情況很多變。
If he refuses to deal with Cuba, then Cuba is going to deal with him.
如果他古巴合作，那么古巴會(huì)找他麻煩。
本期學(xué)習(xí)詞匯：
fluid
n.液體，流體
adj.流體的，流動(dòng)的，流體的，液體的；易變的，不固定的；（動(dòng)作、設(shè)計(jì)、音樂(lè)等）流暢優(yōu)美的
例句：
1. Make sure that you drink plenty of fluids.
務(wù)必保證足夠的水分?jǐn)z入。
2. The situation is extremely fluid and it can be changing from day to day.
情況極不穩(wěn)定，每天都有可能變化。
3. U.S. officials admitted that they were still trying to get a handle on the fluid situation.
美國(guó)官員承認(rèn)，他們?nèi)栽谂α私獍盐账蚕⑷f(wàn)變的形勢(shì)。
4. The forehand stroke should be fluid and well balanced.
正手擊球應(yīng)該保證動(dòng)作流暢和平穩(wěn)。
5. He made himself understood as much by the gestures of his hands as by his fluid English.
他用流暢的英語(yǔ)及手勢(shì)來(lái)說(shuō)明自己的意思。