院子很小，靠着南墙根有棵半大的小枣树，树尖上挂着十几个半红的枣儿。
The yard was very small. By the southern wall grew a young date tree with a dozen fat red dates on its top branches.
现在看着，我会把苹果切一半；你可以接受玫瑰红的这一半，我会吃掉另一半。
Look here now, I will cut the apple in halves; you shall have the rosy-cheek side, and I will eat the other.
当宇宙为目前一半的年龄时的红移值为1。
Redshift 1 refers to when the universe was half its present age.
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