省略号算一句话吗 冒号算一句话吗( 三 )


2. 用于补充说明前面的名词的词语通常用逗号分隔,但如果这些词语之间已经用逗号连接,可以换用破折号 , 以便于理解 。
例如:
Even the simplest tasks, washing, dressing, and going to work, were nearly impossible after I broke my leg.
这句话中“washing, dressing, and going to work”前后用了逗号,意思不太清楚,可以改用破折号:
Even the simplest tasks – washing, dressing, and going to work – were nearly impossible after I broke my leg.
又如:
For the main businesses of its parent company – retail and logistics -, JD Digits provides all-around services including marketing and promotion, technical support and financial services.
上句中“retail and logistics”之间虽然并无逗号,但其前后用破折号比用逗号意思表述更为清晰 。

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