查询词典 expunging

Such an ink, suggests Bartosz Grzybowski of Northwestern University in Evanston, Illinois, could have all sorts of applications, from the obvious one of expunging a sensitive message after a few hours, to bus and train tickets that expire automatically after, say, a month.

他做了各种各样的实验，有的效果显著，诸如使纸上的重要信息在几小时后消失无踪；有的则耗时较长，如使火车或巴士月票在一定期限后，比如说在一个月后自动失效。Grzybowsk博士认为他要制造的就是这样一种材料。

For every one of my New Year resolutions, I have been a backslider for years.

说到我的新年决心，我每年都做

With empathy and focus on a feeling level, we can all relate to the common ground of mutuality of emotions.

有了同情心和感觉上一级的重点，我们都可以涉及到相互的情感共同点。