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The system can be an open system, or it can be a closed system, or it can be isolated.
系统可以是开系，可以是闭系，或是孤立系。
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$firstVoiceSent
- 来自原声例句
The system can be an open system, or it can be a closed system, or it can be isolated.
系统可以是开系，可以是闭系，或是孤立系。
应用推荐