会話トレ Drill: 製造業 Manufacturing
耐震構造 (taishin kouzou)
earthquake-proof-structure
梃子の原理 (teko no genri)
the principle of leverage
use the principle of leverage
てこの原理を使う
不具合 (ふぐあい)
defect
a defect
use the principle of leverage
てこの原理を使う
a defect
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