The protected animal was spotted alive on Sunday by a river from the Wolong center, but it disappeared in the woods before the center staff crossed the river.

这只保护动物于星期日在卧龙中心的一条小河边被发现并且活着，但是它在此中心的员工穿过这条河之前就消失在森林中。

youdao

My hands took the glittering and translucent snowflake, want to count it a few flower petals, but it disappeared on hands, turned into a small water droplets.

我双手接过晶莹的雪花，想数一数它有几朵花瓣，谁知它到手上就不见了，变成了小水珠。

youdao

But it seemed that he had disappeared into thin air.

但是他似乎消失得无影无踪了。

youdao

So I forget who it was, but someone down here who has disappeared, was our Jimmy Stewart character and helped coordinate you on a better equilibrium simply by suggesting what you should do.

我记不清是谁了,他今天可能没有来或者坐别的地方了,就是上一讲的詹姆斯?斯图尔特,他只是告诉大家你们应该怎么做,就使你们达成了较优的均衡

耶鲁公开课 - 博弈论课程节选

But if it disappeared for half a century, unfortunately even future supercomputers would not be able to work out where it had been.

ECONOMIST: Monitor

By the 1960s, widespread vaccination campaigns had virtually eliminated polio from Europe and the U.S. Polio lingered in the U.S., mainly in the Amish population who refused to accept vaccinations, but it finally disappeared in 1979.

FORBES: Despite the Odds, Vaccinators Triumph Over Polio

But all of it disappeared whenever a former student wrote or telephoned.

NPR: An Outstanding Name for an Outstanding Student