George struggled wildly, going under and resurfacing at regular intervals.乔治疯狂地挣扎，不断在水面上浮浮沉沉。Make a point of backing up your files at regular intervals.一定要定期备份文件。The cartridge must be replaced at regular intervals.弹药必须定时...
Precipitates are usually collected by centrifugation at intervals.常常是用离心法分段收集沉淀的.Try to get into the habit of eating at least three small meals a day, at equally spaced intervals.尽量养成每天至少吃3顿小餐的习惯，而且每餐的间隔要相同。She began to ...
You will be surprised there is so much infelicity in the world.你会感到惊讶世界上竟有这么多不幸的事情.A judgmental infelicity plagued past generations.这种不恰当的看法曾困扰了几代人.There is so much infelicity in the world.人世间有很多不幸的事....
他们从紧急出口逃脱，并报了警。They escaped through an emergency exit and called the police.首相已召集议会召开紧急会议。The Prime Minister has called an emergency meeting of parliament.昨天他的飞机在沙尘暴中紧急降落。His plane made a crash-landing during a sandstorm...
Television has irreversibly changed our perception of the Royal Family.电视不可逆转地改变了我们对皇室的印象。Human perception is highly imperfect and by definition subjective.人的感知具有高度缺陷，而且天性主观。our perception of reality我们对现实的认识...