双字母命名系统并不是命代号名的唯一途径。
The two-letter system isn't the exclusive way to pick an operation and exercise names.
旧的命名系统仍然在使用。
然而，命名系统的变革仍然没有避免批评。
The change to the naming system is not without its critics however.
然而，命名系统的变革仍然没有避免批评。
The change to the naming system is not without its critics however.
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