long-lasting的比较级既可以是longer-lasting也可以是more long-lasting。同样地,其最高级既可以是longest-lasting也可以是most long-lasting。如:
Solid rubber is more long-lasting. 固态橡胶更经久耐用。
The product has enormous
sales potential being both cheaper and longer-lasting than any of its rivals on
the market. 这个产品与市场上的同类产品相比既便宜又耐用,有很大的销售潜力。