Pure water is neutral with a pH of 7.

纯净水是中性的，PH值为7。

《柯林斯英汉双解大词典》

Skin is naturally slightly acidic and has a pH of 5.5.

皮肤具有天然弱酸性，pH值为5.5。

《柯林斯英汉双解大词典》

The Ph. D. candidate is likely to change his field of specialization if he drops out.

如果这位博士候选人退出，这很可能会改变他的专业领域。

youdao

If I then put it back into its original condition, lower the heat say, temperature back to body temperature and reduce the pH down to seven again, the molecules will re-nature.

假如我把烧杯的温度恢复到初始状态,降低温度,温度降低到体温,将pH值降低到七,这些分子会复性

耶鲁公开课 - 生物医学工程探索课程节选

Not that they're not going to keep coming out with crazy camcorder cellphones (like the PH-L4000V, pictured above), but they're guessing that the global market for five megapixel cameraphones is relatively small (and likely to stay that way for the next couple years) and that most people would rather have a two or three megapixel cameraphone that was incredibly easy to use.

ENGADGET: Pantech says no to the cameraphone megapixel race

Mr. JACK KEROUAC (Author, "On The Road"): Out we jumped in the warm, mad night, hearing a wild tenorman's bawling horns across the way going, ee-yah(ph), ee-ya, and hands clapping to the beat and folks yelling go, go, go.

NPR: 'On the Road' at 50

Rainbow Ju(ph) - his name - his Chinese name is Ju Ka(ph), and the teacher gave him the name Rainbow.

NPR: Chengdu Youths Discuss Life in China