Results In normal fetus, the urorectal septum ( URS ) descended, its distance to cloacal membrane decreased gradually.结果 泄殖腔发育过程中,胎龄15d前 的正常鼠胚, 尿直肠隔将 泄殖腔 分为腹侧的尿生殖窦和背侧的直肠两部分, 二者共同相通于泄殖腔管....
多项调查一致显示，男性认为天黑后在大街上行走是安全的。比如，参见欣德朗和加罗法洛（1978）。Surveys consistently find that men report feeling safe on the street after dark. See, for example, Hindelang and Garofalo (1978)....
Do you want to take a maglev to the airport?你问对方想坐磁悬浮列车到机场 吗 ?The engine for maglev trains is rather in noticeable.磁悬浮列车的车头是相当值得注意的.The high speed maglev railway is a new - style traffic system.高速磁悬浮铁路是一种新型的交通方式....
What a mess! Look at the pajamas strewing on the bed.真是乱七八糟! 看看睡衣乱放在床上.Go upstairs and get into your pajamas.上楼去穿上睡衣。At bedtime, I take off my clothes and put on my pajamas.睡觉时, 我脱去衣服,换上睡衣.It was a freak of mine to wear ...