《晋书·志·第七章》
孙钦认为： 司马迁撰写造《太初历》，其后刘歆以为《太初历》粗疏，因此又造《三统历》。
孙饮议： 史迁造《太初》，其后刘歆以为疏，复为《三统》。
Sun Qin thought: Sima Qian wrote the initial calendar. Later Liu Xin thought this calendar was too rough and therefore made the three-unifications calendar.
<s>[INST] Given the Classical Chinese text: 孙饮议： 史迁造《太初》，其后刘歆以为疏，复为《三统》。, provide a step-by-step translation process to arrive at the English translation. [/INST]

**Step 1:** Identify the main structure of the sentence.
**孙** (Sun) is the subject, **饮议** (Qin thought) is the verb, and **史迁造《太初》** (Sima Qian wrote the initial calendar) is the object.

**Step 2:** Translate each word or phrase.
**孙饮议** (Sun Qin thought)
**史迁** (Sima Qian)
**造** (wrote)
**《太初》** (the initial calendar)
**其后** (later)
**刘歆** (Liu Xin)
**以为** (thought)
**疏** (too rough)
**复** (therefore)
**为** (made)
**《三统》** (the three-unifications calendar)

**Step 3:** Combine the translated words or phrases into a coherent sentence.
**Sun Qin thought: Sima Qian wrote the initial calendar. Later Liu Xin thought this calendar was too rough and therefore made the three-unifications calendar.**</s>
Given the Classical Chinese text: 孙饮议： 史迁造《太初》，其后刘歆以为疏，复为《三统》。, provide a step-by-step translation process to arrive at the English translation.
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**Step 1:** Identify the main structure of the sentence.
**孙** (Sun) is the subject, **饮议** (Qin thought) is the verb, and **史迁造《太初》** (Sima Qian wrote the initial calendar) is the object.

**Step 2:** Translate each word or phrase.
**孙饮议** (Sun Qin thought)
**史迁** (Sima Qian)
**造** (wrote)
**《太初》** (the initial calendar)
**其后** (later)
**刘歆** (Liu Xin)
**以为** (thought)
**疏** (too rough)
**复** (therefore)
**为** (made)
**《三统》** (the three-unifications calendar)

**Step 3:** Combine the translated words or phrases into a coherent sentence.
**Sun Qin thought: Sima Qian wrote the initial calendar. Later Liu Xin thought this calendar was too rough and therefore made the three-unifications calendar.**
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