Pharmaceutical companies have not yet embraced any method, waiting for something as effective as female methods and risk-free enough to give to healthy men.
制药公司尚未接纳任一种方法，仍在等待能与女性避孕方法同等有效、健康的男士使用零风险的方法。
While male contraception has been studied before, no method met the stringent safety and effectiveness criteria that female methods do. It was also unclear whether men would use them.
关于男性避孕术已经早有研究，但还没发现一种比女性避孕术更安全有效的方法。而且，尚不能确定男性是否愿意使用这些方法。
The exoskeleton structure of female pleopod in Macrobrachium rosenbergii was primarily investigated by histological method.
用组织学方法初步研究了罗氏沼虾雌体腹肢外骨骼的结构。
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