Preoccupant
a. 抢先占据的, 抢先占有的
🗣️ 情景例句
to move the air-conditioning units
移动空调设备
No safe wading in an unknown water.
未知水深浅，涉水有危险。
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。