蚯蚓雌雄同体，雄性生殖器官在第10、第11节的后侧，有两对精巢囊，每一个囊内有精巢和精漏斗各一个，通过隔膜上的小孔与后一对的贮精囊相连；贮精囊两对位于第11节和第12节内，精细胞在精巢中产生后，先进入贮精囊中发育，待成熟后再回到精巢囊，由精漏斗经输精管排出。两条输精管，在13节后，两两...
精囊--Seminal vesicle 尿道球腺--Cowper's gland 前列腺--Prostate gland 精囊上体--Epididymis 输精管--Spermatic duct 睾丸--Testicle 阴囊--Scrotum 阴茎--Penis 龟头--Gland 包皮--Prepuce 阴茎海绵体--Corpus cavernosum penis 手--Hand 手指--Finger 腿--Leg 大腿--Thigh 膝--Knee 小腿--...
This small country is one of the great survivors of history: states and empires emerged, expanded or disintegrated and disappeared around it. Hungary and the Hungarian nation survived the devastation of the Tartars and Turks, Habsburgs and Russians in the Carpathian Basin; survived the...
front disc brake 英 [frʌnt disk breik] 美 [frʌnt dɪsk brek][释义][体] 前轮圆盘制动器;[例句]Honda's CB750 was the seminal superbike, with a front disc brake, a four-cylinder overhead-cam engine, and a$ 1495 price.本田CB750是开创性的超级摩托车，与...
THE EFFECTIVENESS OF JUVENILE CORRECTIONAL INTERVENTIONS In their seminal article, Andrews and his colleagues (1990) argued that to be effective in reducing recidivism, correctional programs must provide treatment that is clinically relevant and draws from the psychological literature of ...
《论衡·论死》又如:精采;精舍;精思精液〖seminalfluid;semen〗男女构精。《易·系辞》又如:精子;精虫精灵;灵魂〖spirit;soul〗血,气之精也;志,意之荣也。《荀子·赋》精交接以来往兮。宋玉《神女赋》又如:精爽;精魄;精胆妖怪〖demon;goblin〗。如:精人;精魅指瘦肉〖leanmeat〗。如:精浇通“菁”。花...
Gil Scott-Heron, a Jazz Poet and Bluesman who wrote and released such seminal songs as The Revolution Will Not Be Televised, H2OGate Blues Part 2: We Beg Your Pardon America and Johannesberg, has been cited as an influence on many rappers. One of the first rappers in hip hop was also...
雌雄同体，异体受精。蚯蚓性成熟后即可进行交配，交配方式大多为异体交配受精。即把精子疏松到对方的受精囊内暂时贮存起来，为之后的受精作准备，除了处在不适宜的条件下或夏眠或滞育外绝大多数种类是全年周期性交配。不同种类的蚯蚓交配方式也有差异。如正蚓科的种类交配时两条蚯蚓的头尾交错腹面紧贴在一...
social，economic，and religious development during one of the most seminal periodsof Chinese history.”1986年，平遥古城被国务院公布为国家级历史文化名城。1997年12月l被联合国科教文组织列人《世界遗产名录》，世界遗产委员会对其的评价是:平遥古城是中国汉民族城市在明清时期的杰出范例，平遥古城保存...
In some cases in the past，public facilities were confused whit the economic notion of ‘public goods’. There may be a few instances where this may be so; defense and certain forms of public health are possible examples although some would dispute even these. Since the seminal ...