Professor Johnson, last night when I was putting the finishing touches on my paper, a computer failure completely wiped out my files, do you think I can have another day to retype it?
Some volunteers plan to carry out a survey about the school finishing time.
一些志愿者计划调查学校放学时间。
3
Rather than wait for the other thread to finish, the current thread can "help" it out by finishing the operation for it by moving the tail pointer forward (b).