| 单词 | sentinel |
| 释义 | Word Frequency sentinel(ˈsɛntɪnəl) noun 1. a person, such as a sentry, assigned to keep guard 2. computing a character used to indicate the beginning or end of a particular block of information verbWord forms: -nels, -nelling, -nelledWord forms: US -nels, -neling or -neled (transitive) 3. to guard as a sentinel 4. to post as a sentinel 5. to provide with a sentinel Word origin C16: from Old French sentinelle, from Old Italian sentinella, from sentina watchfulness, from sentire to notice, from Latin |
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