weakly alkaline的用法和样例：
例句
- Chitosan, a natural polymer, is a partially deacetylated polymer of acetyl glucosamine obtained from the alkaline deacetylation of the chitin.
壳聚糖是一种天然高分子，是一种聚合物部分脱乙酰乙酰氨基葡萄糖从碱性的脱乙酰甲壳素。 - A disadvantage that has prohibited cationic epoxies from more uses in wood coating is their sensitivity to humidity and the fact that some woods are alkaline in nature.
阻碍阳离子环氧树脂在木材涂料当中应用的是因为它们对水分很敏感，以及一些天然的木材是碱性的。
