プログレッシブ和英中辞典(第4版)の解説
さんにゅう【参入】
（急成長）市場への参入
entry [entrance] into a (fast-growing) market
外資系会社の新製品市場への参入
the entry of a foreign-affiliated company into the market for a new product
外国企業の参入障壁として関税が引き上げられた
The tariff was increased 「as an entry barrier for foreign companies [to make it more difficult for foreign companies to enter the market].