数十

1. Origins, structure, and basic meaning

• Structure: 数十 is read as すうじゅう and means dozens or several dozen without stating an exact number.
• Basic usage: It combines with 人 to count people or with 年前 to express a period decades in the past.

2. Common pitfalls and similar expressions

• Counting people approximately
  • 数十人 indicates that several dozen participants gathered at the venue. Example: 会場には数十人の参加者が集まった。
• Referring to decades ago
  • 数十年前 places the tools several decades in the past. Example: 倉庫から数十年前の道具が見つかった。