Dans
prep. （法）在…里；按照…；在…时候
🗣️ 情景例句
I don't think I have a mathemationcal brain.
我想我没有数学头脑。
What's learnt in the cradle lasts till the tomb.
小时学过的，至死不忘记。
Yet a great many processes depending on such research are sought for with complete secrecy until the stage at which patents can be taken out.
然而，依赖这种研究的很多工艺程序是在完全保密的情况下进行的，直到可以取得专利权的阶段为止。