That includes using condoms properly. 包括正确使用避孕套。 If you live in or travel to an area where Zika has been found, protect yourself against the mosquitoes that carry this disease. 如果你生活在或旅行到已经发现寨卡病毒的地区，保
It goes like this: 163 people across four separate tests. 比如这个：163个人进行4组不同测试。 Everyone wrote down their personal goal. 每个人写下他们各自的目标。 Then half of them announced their commitment to this goal to the ro
李炫秀Ted英语演讲：My escape from North Korea我的北韩逃亡记(中英) When I was little, I thought my country was the best on the planet, and I grew up singing a song called "Nothing To Envy." And I was very pro
So Archie splits the men under his care as best he can into two equal groups. 所以阿奇就把他的病人平分成两组人。他给其中的一半维他命C。他给另一半维他命B12。 He gives half of them vitamin C. He gives half of them vitamin B12. 他给其中的一半维他命C。
