• 1. 这是第一课: This is Lesson One
• 2. 这是我的第一课: This is my first lesson

• 1.这是第一课。这是第一课。
  This is Lesson One.
  dict.yoduao.com
• 2.这是第一课。
  This is Lesson One.
  dict.yoduao.com
• 3.这可能不是大多数毕业演讲的人会说的话，但这是成长的第一课。
  It's probably not something most graduation speakers would say, but it's the first lesson of growing up.
  dict.yoduao.com

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