Half of Europe is opposed to embryonic stem cell research.
半个欧洲反对胚胎干细胞的研究。
Every human spent about half an hour as a single cell.
每个人作为单细胞生存的时间约为半小时。
He found a rope in his cell that was half as long enough to permit him to reach the ground safely.
他在牢房中找到了一根绳索，但这根绳索只有够他安全到达地面的长度的一半。
He found a rope in his cell that was half as long enough to permit him to reach the ground safely.
他在牢房中找到了一根绳索，但这根绳索只有够他安全到达地面的长度的一半。
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