[名词解释] Fetal antigen
[名词解释] 死胎(fetal death)
[名词解释] 胎方位(Fetal Position)
[名词解释] 巨大胎儿(fetal macrosomia)
[名词解释] border movement
[名词解释] 胎先露(Fetal Presentation)
[名词解释] 胎产式(Fetal Lie)
[单选题]() usually helps to induce air movement to assist combustion.A . Cylinder coverB . Main bearingC . The exhaust valveD . The piston movement
[单选题][A] research[B] operation[C] movement[D] search
[填空题] 英译中(Translate):stomatal movement()