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- fourth longitudinal vein 第四纵脉,中脉
- A main longitudinal vein in a leaf. 叶片上主要的纵脉。
- Sori borne along the longitudinal veins and protected by the reflexed edges of the ultimate segments of pinnules. 孢子囊沿能育叶裂片的纵脉两侧著生，并为裂片反卷的边缘所覆盖。
- Time is sometimes called the fourth dimension. 时间有时被称为第四度空间。
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- longitudinal veins dark green, cohering at apex; 纵向脉深绿色，紧凑的在先端；
- She helps her mother when she is in the vein. 她在心情好的时候会帮她妈妈的忙。
- I am a soldier of the fourth cavalry. 我是第四骑兵部队的一员。
- Reserve double room June fourth to tenth inclusive. 预订双人房间，六月四日至十日，共六晚，望订妥复电。
- Mars is the fourth planet in order from the sun. 火星是太阳系的第四颗行星。
- A vein of gold was seen cropping out. 可以看见一条金矿矿脉露出地面。
- A longitudinal cut from the trunk of a tree. 料板，板皮从树干上纵切下的一块木材
- The 800m is the fourth event of the afternoon. 800米赛是下午的第四项比赛。
- The central or principal vein of a leaf. 中脉中心的或主要的叶脉
- He had no comedy vein in his youth. 他年轻时没有演喜剧的才干。
- The twins will enter the fourth grade this fall. 这对双胞胎今年秋季将升到四年级。
- Her fourth husband was a middle-aged playboy. 她的第四任丈夫是一个中年的花花公子。
- A rich mine, vein, or pocket of ore. 富矿脉富矿坑、脉、囊
- The fourth letter of the Hebrew alphabet. 希伯来第四个字母希伯来语字母表中的第四个字母
- longitudinal veins violet, inconspicuous, cohering at apex; 纵向脉紫色，不明显，紧凑的在先端；
