词汇习得是语言习得的一项重要内容，它是一个由浅及深的过程，有着丰富的内容，并受各种因素的影响。
Vocabulary acquisition is an important part of SLA, which is a step-by-step process, affected by many factors.
在行浅静脉及交通支静脉手术的同时行深静脉重建术是非常必要的。
Deep venous reconstruction should be considered when superficial venous or perforator venous reflux are operated upon.
小脑皮质及髓质的动脉分为皮质浅动脉、皮质中动脉、皮质深动脉、皮质髓质动脉及髓质动脉。
The cerebellar arteries in cortex and medulla are classified into superficial, middle, deep cortical arteries, corticomedullary arteries and medullary arteries.
具有黑背及黑色口鼻，躯体色型从浅稻草黄到深铁锈红不等。
Coats are marked with a black saddle and muzzle with other colors ranging from light straw to deep rust.
总结了治疗多发性脾脓肿的三条经验，即一针多腔，由深及浅，先小后大的原则，强调残余脓肿不论大小均要穿刺治疗。
The three principles on treatment of multiple splenic abscesses are one needle for many abscesses if ROM deep to shallow; and from, small to big.
在简单能带结构情况下，我们讨论了电离能与原子性质的关系，及由浅能级向深能级的转化。
In the case of simple band structure, the influence of atomic character on the ionization energy, and the relation between the shallow and the deep levels were discussed.
硬化剂注射、浅静脉手术、深静脉瓣膜重建手术、交通静脉结扎术及皮肤移植均有利于溃疡愈合。
Injection sclerotherapy, superficial vein ligation and stripping, deep vein valve reconstruction, perforator ligation, and skin grafting favor the healing of ulcers.
所有病人均行深、浅静脉及交通静脉彩色多普勒超声检查和患肢顺行性深静脉造影。
All of the patients were accepted ascending phlebography and color Doppler ultrasonography of deep for superficial and perforating veins.
试验处理包括常规耕作、深松、秸秆覆盖、垄作、浅坑及免耕。
Treatments included conventional tillage, subsoiling, straw mulch, tied ridges, shallow pits surface and no tillage.
识别出扇三角洲、远（近）源三角洲、水下扇及浅湖、深湖-半深湖等沉积体系。
The sedimentary systems in the T-R cycle: fluvial fan, fan delta, common delta and lacustrine sedimentary system.
具有黑背及黑色口鼻，躯体色型从浅稻草黄到深铁锈红不等。
Coats are marked with a black saddle and muzzle, with other colors ranging from light straw to deep rust.
计算得出的莫霍面及康氏面均为西北深，东南浅。
The Mohole and Conrad are calculated, showing the characteristics of the deep northwest and the low southeast.
据此提出完成这一设计思想应采取深孔爆破、水压爆破及浅眼爆破相结合的最佳方案。
On these grounds, it is confirmed that the general blasting scheme of combining the long-hole and short-hole blasting with water-pressure blasting should be adopted so as to realize the design idea.
目的：探讨下肢浅静脉手术改善深静脉瓣膜功能的程度及影响效果的因素。
Objective:To discuss the efficiency and influential factors that can improve the function of deep venous valve after superficial vein surgery of lower extremity.
目的：探讨下肢浅静脉手术改善深静脉瓣膜功能的程度及影响效果的因素。
Objective:To discuss the efficiency and influential factors that can improve the function of deep venous valve after superficial vein surgery of lower extremity.
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