He was studying the complex similarities and differences between humans and animals.
他在研究人和动物之间错综复杂的相似与不同之处。
I sat down between Jo and Diana.
我在乔和黛安娜中间坐下。
It weighed between nine and ten kilos.
重量在九到十公斤之间。
His emotions veered between fear and anger.
他的情绪变化不定，一会儿恐惧一会儿生气。
His emotions swung between fear and curiosity.
他时而害怕，时而好奇。
His emotions swung between fear and curiosity.
他时而害怕，时而好奇。
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