For eight years the two companies have been in an alliance, called 2M, in which, like airlines swapping passengers in code-sharing agreements, they provide container space on each other's vessels.
八年来，这两家公司一直结成联盟，称为 2M， 就像航空公司在代码共享协议中交换乘客一样，它们在彼此的船只上提供集装箱空间。