您要查找的是不是：
- Oulema tristis 谷子负泥甲
- Confitebor tibi in cithara, Deus, Deus meus: quare tristis es anima mea, et quare conturbas me? 上主，我们的天主，吾将弹奏竖琴称颂祢。汝为何忧伤，我的灵魂，汝为何气馁？
- An Old World beetle (Oulema melanopus) now found in the United States, where it is a serious pest of grain crops as a result of its consumption of cereal grasses. 橙足负泥虫，黑角负泥虫：一种东半球甲虫（黑角负泥虫禾谷负泥虫属），现发现于美国，以谷类作物为食，是危害严重的害虫
- Any of several small American finches of the genus Carduelis,especially C. tristis,of which the male has yellow plumage with a black forehead,wings,and tail. 黄雀，若干种小的雀属美洲雀，特别是黄雀属，雄鸟羽毛呈黄色；翼、尾和头顶均呈黑色。
- Any of several small American finches of the genus Carduelis, especially C. tristis, of which the male has yellow plumage with a black forehead, wings, and tail. 黄雀若干种小的雀属美洲雀，特别是黄雀属，雄鸟羽毛呈黄色；翼、尾和头顶均呈黑色
- o voi senza ritorno stelle tristi, 你们没有归途的忧郁星辰，
- Study on Tissue Culture Technique for Salix alba var. Tristis Gand 金丝垂柳组织培养体系建立研究
- Rheumaptera tristisn. 郁汝尺蛾
- Gandaritis tristisn. 暗枯叶尺蛾
- Euxoa tristisn. 郁切夜蛾
- Athetis tristisn. 北委夜蛾
- Nodaria tristisn. 悲疽夜蛾
- Aleiodes tristisn. 深色脊茧蜂
- Festuca tristisn. 黑穗羊茅
- Gahnia tristisn. 黑莎草
- Arhopalus tristis 暗梗天牛
- Acridotheres tristisn. 家八哥(八哥科)
- Carduelis tristisn. 北美金翅(雀科)
- Tilia tristisn. 淡灰椴
- Salix alba var. tristis C.and 金丝垂柳
