点击下方单词,选择对的这个单词
1. stand sentry : 站岗;
2. come off sentry : 下岗;
3. be on sentry : 站岗;
名词
1. 哨兵;警卫A sentry is a soldier who guards a camp or a building.
1. a person employed to keep watch for some anticipated event
Synonym: lookoutlookout mansentinelwatchspotterscoutpicket
多通过句子记忆单词,而不是单独死记硬背。