WITH reference to Mr. Elson's observation1 that ascorbic acid at low concentrations inhibits urease activity, and that this inhibition disappears in the presence of cysteine, it is worth noting that ...

What you see is pinyin, literally 'spell out the sound'. It's a system for romanizing Chinese ideograms, used in mainland China for Mandarin, a.k.a. putonghua.

Hi. I'm Tim and this is my Pronunciation Workshop. Here, I'm going to show you how English is really spoken. Come on, let's go inside. Hey, look at this: a present. All wrapped up in paper. Now, do ...

This is the second of five long vowel programmes in our series of videos that explore the sounds of English. This is the second of eight other consonant programmes in our series of videos that explore ...