lightened的翻译

As they approached the outskirts of the city, Ella's mood visibly lightened

他们快到市郊时，埃拉的情绪明显好转。

With nursery temperature falling, chilling-resistance materials in cucumber seedling leaves increased and the chilling injury of cucumber seedling lightened, because of the increase in POD, SOD activity and decrease in electrolytic leakage and MDA content, of cucumber seedling under cold treatment.

育苗温度对黄瓜幼苗抗冷性有明显影响：适当降低育苗温度，可以增加叶片中抗冷保护物质含量；低温处理过程中，SOD、POD活性升高，电解质渗漏率和MDA含量降低，冷害症状减轻。

Yesterday was Easter, but there wasn't much bunny spirit around. However, the spirit of April Fool's was in full swing everywhere today.It lightened up our dull lives here, but when too many practical jokes are around,

昨天是复活节，但周围却没有很多兔宝宝的气氛。不过，今天愚人节的气氛却到处弥漫着。它调剂到了我们这种枯燥的日常生活，但当到处充满着恶作剧时，事情可能会错乱了。