您要查找的是不是：
- on upperwing, best clues are white-bordered, dark midwing-panel on greater coverts and white-tipped primary coverts (not white trailing edge as on Snipe); 其翼上最显著的特征是覆羽间显眼白色条纹，大覆羽中部黑色的翼斑和初级（大）覆羽上白色的尖端（扇尾沙锥此位置不呈现白色）
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- primary coverts 初级覆羽
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- wings rather blunt-tipped, and primaries more brownish (darker on Snipe); primary coverts narrowly tipped pale (on average more so than on Snipe); 翅膀圆而钝，初级飞羽深褐色（扇尾沙锥为此部位黑色）;初级（大）覆羽末端羽毛呈现苍白色（扇尾沙锥此部位要淡得多）;
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- Collins was nosed out by his opponent in the primary. 柯林斯在初选中就被他的对手击败了。
- Not derived from something else; primary or basic. 基本的不是从它物派生的; 原本的或基本的
- grey duck primary covert 灰鸭小关刀
- grey goose primary covert 灰鹅关刀
- We lost the New Hampshire primary. 我们在新罕布夏州的初选失利了。
- white duck primary covert 白鸭小关刀
