1To put parts or materials together, in the right order, to build a complete object.
週末、買ってきた本棚を自分で組み立てた。
On the weekend, I assembled the bookshelf I'd bought myself.
工場でロボットが部品を組み立てている。
Robots at the factory are assembling the parts.
子供とプラモデルを組み立てて遊んだ。
I played with my child, assembling a plastic model kit together.
このテントは工具なしで簡単に組み立てられる。
This tent can be easily assembled without any tools.
2To organize ideas or information in a logical order and shape them into a sentence, argument, or plan.
論理的に話を組み立ててから発表した方がいい。
It's better to logically structure what you're going to say before presenting it.
弁護士は証拠をもとに主張を組み立てた。
The lawyer built his argument based on the evidence.
プレゼンの構成を組み立てるのに一晩かかった。
It took me all night to work out the structure of my presentation.