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- A primitive or ancestral form or species. 原形一种原先或始祖性的形态或物种
- Sharing a common origin or ancestral forms. 同源的有共同来源或祖先形式的
- The fin-limbs of sarcopterygiians are so like the expected ancestral form of tetrapod limbs that they have been universally considered the direct ancestors of land vertebrates. 肉鳍四脚鱼的鳍肢与人们想象的四脚动物祖先的脚十分相似，因此肉鳍四脚鱼是陆地脊椎动物的直系祖先这一说法被广泛认可。
- But here's the punch line: Laughter and joy are not unique to humans, the study says. Ancestral forms of play and laughter existed in other anim... 一项最新的研究结果显示，由于大脑的进化，人类在能够说话之前就已经学会笑了。
- A branching, treelike diagram in which the endpoints of the branches represent specific species of organisms. It is used to illustrate phylogenetic relationships and show points at which various species have diverged from common ancestral forms. 进化分枝图一种分叉的树状图，其分枝的终点代表生物的特定品种。其被用来说明种系发展的关系，并显示在何处不同的物种从同一远祖形式分化
- We should study our ancestral achievements. 我们应该学习祖先的成就。
- The paint is sold in powdered form. 该油漆以粉制品形式出售。
- They kept their ancestral customs. 他们保持了祖辈的习俗。
- Most synthetic detergents are in the form of powder or liquid. 大多数合成洗涤剂呈粉状或液态。
- The ginpole is the simplest form of derrick. 起重吊杆是一种最简单的起重机。
- The script is massaged into final form. 这篇稿子经过修改已定稿。
- Selfishness in any form is my pet aversion. 我最讨厌自私自利，不管它以什么形式出现。
- Some biological molecules have the form of a helix. 有些生物分子呈螺旋状。
- It is possible to transmute one form of energy into another. 把某种形态的能量改变成另一形态的能量是可能的。
- Could this verb be used in progressive form? 这个动词可以用进行式吗？
- A reversion to a former type or ancestral characteristic. 返祖恢复到从前的类型或祖先的特征
- The two parties have united to form a coalition. 这两个党已结成联盟。
- There is a standard form of oath used in lawcourts. 法庭中使用的誓词有固定的格式。
- It will send you standard form for you to fill out. 它(商标局)会寄给你标准表格要你填写。
- The elephant's trunk is a unique form of appendage. 象的鼻子是一种独特的附肢。
