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- Specialized regions of the developing limb bud including the zone of polarizing activity (ZPA), the apical ectodermal ridge (AER), and the non-ridge ectoderm regulate the patterning of digits. 在側肢發(fā)育的早期，包括極化活性區（ZPA）、頂外胚層脊（AER）和非脊外胚層在內的一些特化區域調控著(zhù)指/趾的模式形成過(guò)程。
- apical ectodermal ridge 頂端外胚層嵴
- A ridge or hill of ice in an ice field. 冰丘冰原上的冰脊或冰山
- He walked along the mountain ridge. 他順著(zhù)山脊走。
- A ridge on the flesh raised by a blow; a welt. 抽打后皮肉上隆起的痕; 鞭痕
- The arch of short hairs covering this ridge. 眉毛覆蓋于眉上的拱狀短毛
- A low mound or ridge of earth; a knoll. 小丘低土丘或圓崗; 小丘
- The floor of the atlantic ridge in the middle from north to south. 大西洋洋底在中部形成由北向南的海脊。
- The part of a pair of eyeglasses that rests against this ridge. 眼鏡的鼻梁架眼鏡架在鼻梁上的那部分
- The flowers in the garden aer at their best. 花園里的花朵盛開(kāi)著(zhù)。
- The notch cut into a key that corresponds to such a ridge. 鑰匙的榫槽鑰匙上切割出的對應鎖眼的凸槽
- Jenny:Aer you stupid or something? 珍妮:你是傻還是什么?
- Aer you ready to order or just a minute? 請問(wèn)您是現在點(diǎn)菜還是一會(huì )兒？
- The office seems so dull and prosaic after Pine Ridge. 從松嶺回來(lái)后，辦公室似乎變得枯燥無(wú)味了。
- As a mother you aer shaping the future. 作為母親，你正在創(chuàng )造未來(lái)。
- There aer awesome cities full skyscrapers. 繁榮的城市里摩天大樓林立.
- Seeds numerous, flat, apical end winged. 種子多數，平，頂端末端具翅。
- It was getting along in the afternoon as we worked our way down the ridge. 當我們一路排除困難走下山崗時(shí)，天色已近薄暮。
- Two heads aer better than words. 一人不抵兩智。）
- Ovary with apical, elongate portion ca. 4 cm. 子房具頂生，延長(cháng)部分達4厘米。
