■ long distance

可以作为副词短语使用。

• He telephoned her long distance from New York.他从纽约给她打长途电话。

• object
• objet d'art
• obligation
• obligation 与 duty
• obscene
• occupy
• occur
• of
• of
• of a
• of all
• off
• offend
• offer
• office
• off of
• of itself
• of one's
• often
• oil
• old
• on
• on
• on a first-name basis
• once