The semen was collected by masturbation.2.
由专科医生进行生殖系统检查，手淫法收集精液。
参考来源 - 空军雷达作业人员精液检测与精子染色质结构分析We inseminated 12 hours after the first signs of heat with frozen semen.
12小时后,在出现最初发情迹象时用复苏的冷冻精液对其进行人工授精。
参考来源 - 西农萨能奶山羊人工授精、胚胎移植技术的应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
N-UNCOUNT Semen is the liquid containing sperm that is produced by the sex organs of men and male animals. 精液
If thawed semen is used, it has to be injected directly into the uterus through the ewe's belly wall.
如果使用解冻的精液，它必须通过母羊的腹壁直接注入子宫。
Interviews revealed that the males with good semen quality ate significantly more fruits and vegetables.
访谈显示，那些精子质量高的男士吃明显更多的水果和蔬菜。
A human study has found strong links between BPA levels and semen quality, and the findings are not looking good.
现在，一项人类研究发现了双酚A含量和男性精子质量之间有密切关联，结果并不乐观。
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