It's summer

正值───positive;夏季───summer

Even innocuous substances can sometimes register a positive result in a drug test.───即使无害的物质在药物测试中有时也会呈阳性.

Two athletes tested positive for steroids.───两名运动员的类固醇试验呈阳性。

Drugs again rained on the Olympics'parade as another athlete tested positive for an illegal substance.───兴奋剂再次煞了奥运会的风景,又有一名运动员的违禁药物检测结果呈阳性.

The athlete tested positive for steroids.───这个运动员类固醇检测呈阳性。

French artist and inventor of the daguerreotype process for obtaining positive photographic prints.───达盖尔,路易斯·雅克·曼德1789-1851法国艺术家和发明家,发明了银版摄影术,能洗出照片的正画来.

I adopted a positive outlook on life.───我开始抱持积极向上的人生观。

If one looks at the longer run, a lot of positive things are happening.───如果把目光放长远些，就会发现很多积极的事情正在发生。

Sir Patrick attempted to sound a positive note, describing the meeting as serving a useful purpose.───帕特里克爵士极力释放出一种积极的论调，称此次会议是很有用的。

The negotiations have been conducted in a positive manner.

I hope u'll be more positive overall.

One must be positive,(sentence dictionary) but not too positive.

Only one witness could make a positive identification.

I wish you'd be more positive.