然而，在2月底给这个女孩送书时，黄发现曾家里的网络信号很差。
However, Huang found that the network signal was poor at Zeng's home when he took books to the girl at the end of February.
著有《保持联系：克服害羞指南》一书的心理学家阿瑟·沃斯默说：“害羞的人发出冷漠或退缩的信号，并且常常意识不到。”
"Shy people send out signals of coolness or withdrawal, often without realizing it," says psychologist Arthur Wassmer, author of Making Contact: a Guide to Overcoming Shyness.
人类学家大卫·吉文斯所著《爱的信号》(Love Signals)一书是如何用身体语言诱惑对方的实用指南。
Love Signals, a book by anthropologist David Givens, is a practical guide to the body language of seduction.
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