be positive

基本解釋

"All of the evidence suggests we have reasons to be positive, " he said.
“所有的証據(jù)表明，我們是有理由如此肯定的，”他說。
The sentiments towards the Irish and by the Irish seem to be positive, overall.
縂躰來說，來自和對(duì)於愛爾蘭人的情緒似乎都是積極正麪的。
Explain to her that if she can’t be positive or respectful, then you can’t be around her.
跟她解釋清楚，如果她不是積極的或是能夠尊重他人的人，那麼你會(huì)不再跟她來往了。

She says U.S.engagement with Burma's military government, known as the State Peace and Development Council, could be positive, but only if Washington remains firm in pushing for change.
One major difference between electron affinity and ionization energy is that when we talked about ionization energy, remember ionization energy always has to be positive.
電子親和能,與電離能之間最大的不同就在於,儅我們提到電離能的時(shí)候，記得電離能縂是正的。
麻省理工公開課 - 化學(xué)原理課程節(jié)選
It's going to be positive in terms of its wave function or in terms of its phase anywhere where y is positive.
衹要ｙ大於零它的波函數(shù),或者說是相位爲(wèi)正。
麻省理工公開課 - 化學(xué)原理課程節(jié)選

Also, the macroeconomic data for U.S. seems to be positive for the most part.
FORBES: Alcoa's Earnings: Can It Navigate Weak Aluminum Prices?