On business is mostly used to describe the motivation or purpose of behavior, such as business trips, travel, etc., while in business is more used to describe a person's career, business activities or business conditions. Example: ①she is often out of town on business. Office 2021 for mac activation key. As an individual user, the professional workstation version is better. The system is pure and powerful. It can support up to 4 physical CPUs and 6TB of memory. It is compatible with server-level processors such as Intel Xeon and AMD Opteron, and supports high speed.
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