长期证券 meaning in English

long dated securities

The investment banker is the middleman between company and investor
投资银行的主要功能就是为公司销售长期证券。
Hard - to - sell long - term securities had been bought with short - lived debt , which left borrowers vulnerable to a change in sentiment every time the debt fell due
有时投资者购买了不易卖出的长期证券，又买了短期证券，每次遇到熊市，情绪就很容易波动。
Hard - to - sell long - term securities had been bought with short - lived debt , which left borrowers vulnerable to a change in sentiment every time the debt fell due
难以出售的长期证券和短期债务同时买入，这让借贷方易于受到每次债务到期时市场情绪变化的影响。
Hard - to - sell long - term securities had been bought with short - lived debt , which left borrowers vulnerable to a change in sentiment every time the debt fell due
我理解为：他们以短期债务形式购买难以脱手的长期证券，那么每一次当短期债务到期时的情绪变化都会影响这些借款人。