ambivalent
She seems to feel ambivalent about her new job
Jane became ambivalent about her engagement to Tom as she realized she still cared so much about Mike.(简对于和汤姆的订婚仍旧感到很矛盾,因为她发现她到现在还非常在意迈克。)
bivalent
divalent-bi-di的结构
valent
Effect of different valent cation solution was different on soil erosion.
不同价态阳离子溶液对土壤侵蚀的影响不同。