re-entrant
noun [ C ] mainlyUK (also mainlyUS reentrant) uk/ˌriːˈen.trənt/ us/ˌriːˈen.trənt/
重新加入
a person, organization, etc. that goes back to an activity they did earlier
The state's labour markets had been flooded by both new entrants and re-entrants into the labour force.
The chess festival attracted over 1,000 participants, including 89 reentrants, who are allowed, if dissatisfied with their start, to pay to begin the tournament again. 国际象棋节吸引了 1,000 多名参与者，其中包括 89 名重新参赛者。该赛会允许参赛者付费重新参加锦标赛，如果他们对自己的首盘比赛结果不满意的话。
re-entrant
adjective specialized (also reentrant) uk/ˌriːˈen.trənt/ us/ˌriːˈen.trənt/
(COMPUTER PROGRAM)
computing （计算机程序或代码）可重入的
(of a computer program or code) able to be run on several processors at the same time and be interrupted and called again without affecting what is happening on the other processors
Re-entrant subprograms are useful in multi-threaded situations, since multiple threads can call the same subprogram without fear of interfering with each other. 可重入子程序在多线程情况下很有用，因为多个线程可以调用同一个子程序而不用担心相互干扰。
When a program is executing reentrant code, another program can interrupt the execution and can then start or continue execution of that same code.
(ANGLE)
science 凹角的
A re-entrant angle points inwards.
There was greater erosion of the tips of the teeth and discoloration spread into the re-entrant angles of the teeth.
The twinning is clearly shown by reentrant angles formed by equivalent faces of the two crystals where they meet.
A reentrant recess extends upwards into the coupling part around the hub. 凹角槽向上延伸到接口外圈的连接处。