非阻塞
The semantics of allocating and queueing buffers for sockets also involve flow control rules and for sending a whole list of interactions with signals and optional settings such as non blocking. 套结字分配、排列缓存的句法同时也包含流控规则，以及发送相互作用的包括信号、可选设置比如非模块化的链表的规则。
He is a great guy, a chip off the old block. 他是一位好人，就像他父亲一样。
This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
That old block of flats is a real eyesore! 那座旧公寓真不顺眼！
The office block is under offer. 办公大楼已有人出价购买。
Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
