单词:abnormal sperm
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[00:04.55]Language Function: [00:07.13]Requesting Assistance [00:10.95]A:Could you help me for a moment? [00:14.94]B:Yes,with pleasure. [00:18.13]A:Would you please take care of the luggage while I go to a taxi [00:24.03]B:No problem. A:That's vert k
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Beijing, Sept. 6 (Xinhua) -- A sperm donation scandal disclosed recently has aroused growing concern in the United States. According to the New York Times' report, Ryan Kramer, the son of a donor, found that he has more than 150 half-siblings - they
WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo
地球末日真的来了英语对话 Tracy: It's rather cold this winter. 今年冬天真是冷啊! Jack: Yeah. Australia, however, is awful hot. 是啊。但是澳洲却极其的热。 Tracy: In a word, we have abnormal weather all over the world