渡来

1. Origins, structure, and basic meaning

• Structure: It is read とらい. 渡 contributes crossing and 来 coming, forming a word for people or cultural and material things arriving from abroad.
• Basic usage: It is used to describe the arrival of foreign technologies or plants. The example says a technology is believed to have come from across the sea.
  • この技術は海を越えて渡来したと伝えられる。

2. Common pitfalls and similar expressions

• Another word with the same reading
  • 渡来 focuses on coming from abroad, while 到来, also read とらい, can refer to the arrival of a time or opportunity.