something that is being monitored or considered
正在被监视或考虑的某事 (zhengzai bei jianshi huo kaolü de mou shi)
"The new scientific theory is now on the radar of researchers across the world."
"新的科学理论现在已经在雷达上，全球的研究人员都在关注。" (Xīn de kēxué lǐlùn xiànzài yǐjīng **zài léidá shàng**, quánqiú de yánjiū rényuán dōu zài guānzhù.)
experiencing a period of bad luck
to perform one's assigned tasks or responsibilities
someone who learns things fast
to use something until it becomes unusable
People or things forgotten when not visible or present.
you have to work hard to achieve success
