s***t
发帖数: 197 | 1 add up (1. no object): logically fit together.
"His theory is hard to believe, but his research adds up."
Note: This phrasal verb is often negative.
"His theory seems, at first, to be plausible, but the facts in his
research don't add up."
add up (2. separable): find the total.
"What's the total of those bills? Could you add them up and see?" |
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