The French port of Calais was closed on Saturday and that caused a huge backup of vehicles around the English port of Dover where ferry services were hit.

VOA: standard.2009.12.21

SRC back One is called SRC for Source and one is called SRC.back which was my backup of today's source code in case I screw up.

其中一个叫SRC，用来装源代码，另一个叫,用来备份源代码，以防我搞砸了。

哈佛公开课 - 计算机科学课程节选

SRC back One is called SRC for Source and one is called SRC.back which was my backup of today's source code in case I screw up.

其中一个叫SRC，用来装源代码，另一个叫,用来备份源代码，以防我搞砸了。

哈佛公开课 - 计算机科学课程节选