a place or situation where things are lost, never to be found again
一个地方或情况，事情丢失后再也找不到 (yi ge difang huo qingkuang, shiqing diushi hou zai ye zhao bu dao)
"The document I was looking for seems to have disappeared into a black hole."
"我找的文件似乎已经消失在黑洞里了。" (wo zhao de wenjian shibai yijing xiaoshi zai heidong li le.)
a casual way to admit a small mistake
to increase one's self-assurance or belief in one's abilitie...
to imagine pleasant things while awake
a person’s ability to judge what is right and wrong
to reveal something secret unintentionally
to balance between two opposing things; to compromise
