| 单词 | sign of activity |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔activity〕Police watched the house all day, but there was no sign of activity.警察整日监视着这所房子，却未发现任何活动迹象。牛津搭配〔watch〕He watched for signs of activity in the house.他注视着那所房子里的动静。牛津高阶〔watch〕He watched the house for signs of activity.他注视着那所房子里的动静。牛津高阶Garden plants are finally showing signs of activity after the long winter.在漫长的冬季之后，花园里的植物终于显现出生机。剑桥国际 |
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