这种微酸的味道是因为含有乳酸造成的。The somewhat acid flavour is caused by the presence of lactic acid.这种化学药品在我们的试验中起酸的作用.This chemical acts a part of an acid in our experiment.有些酸的酸性强得可以烧坏木头.Some acids are strong enough to burn the wood....
你可以乘雪撬或骑自行车向山脚下滑行.You can coast downhill on a sled or a bicycle.雪撬滑下坡.The sledge coasted down the slope.雪撬是这个地区的一种重要的交通工具.Sleigh is an important kind of transportation tool in this area....
我想语音拼写可能有助于发音。I thought a phonetic spelling might aid in pronunciation.彻底刷牙有助于口气清新。A thorough brushing helps to freshen up your mouth.压缩磁盘驱动器有助于人们管理重要信息。Zip drives help people to organise their important information....