[題目] 請教句法解析
題目:However, this poses the challenging problem of depositing two materials
simultaneously that require different partial pressures of a reactive gas.
疑問:
我想請問 1.此句的主詞及動詞是哪個
2.關於that在這裡的用法是什麼
3. this在這是否作為虛主詞呢
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◆ From: 1.165.115.15
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01/01 15:08, , 1F
01/01 15:08, 1F
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01/01 15:08, , 2F
01/01 15:08, 2F
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01/02 08:53, , 3F
01/02 08:53, 3F
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01/03 16:22, , 4F
01/03 16:22, 4F
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01/04 06:28, , 5F
01/04 06:28, 5F
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01/04 06:29, , 6F
01/04 06:29, 6F
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01/04 06:30, , 7F
01/04 06:30, 7F
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