Word · Frequency #20447
sentinel
哨兵；卫兵；守望者
A sentry, watch, or guard; a person employed to keep watch for some anticipated event.
- 1.
A sentry, watch, or guard.
哨兵,守卫
- 2.
a person employed to keep watch for some anticipated event
受雇守望预期事件的人
- 3.
A unique value recognised by a computer program for processing in a special way, or marking the end of a set of data.
计算机程序中用于特殊处理或标记数据集结束的独特值
- 4.
A sentinel crab.
哨兵蟹
- 5.
A sign of a health risk (e.g. a disease, an adverse effect).
健康风险的标志(例如疾病,不良反应)
哨兵值；标记值；健康风险征兆；警示信号；大眼蟹；哨兵,守卫；受雇守望预期事件的人
In use
The sentinel stood guard at the entrance all night.
Ancient cities often had sentinels posted on the walls to watch for approaching enemies.
During the camping trip, we took turns being sentinel to keep the fire going.
Connections
Collocations
- stand sentinel
- 站岗；放哨；守卫
- Soldiers stood sentinel at the gate.士兵们在大门站岗。
- sentinel value
- 哨兵值；标记值
- The program uses -1 as a sentinel value to mark the end of input.该程序用 -1 作为哨兵值，标记输入结束。
- sentinel node
- 前哨淋巴结
- The surgeon checked the sentinel node for signs of cancer.外科医生检查前哨淋巴结是否有癌症迹象。
- sentinel event
- 警讯事件；重大安全事件
- The hospital reported a sentinel event to the health authority.医院向卫生部门报告了一起警讯事件。
- sentinel species
- 指示物种；哨兵物种
- Canaries were once used as sentinel species in coal mines.金丝雀曾被用作煤矿中的指示物种。
- post a sentinel
Learner notes
Memory Tip
记忆联想：sentinel 拆成 sent + in + el，哨兵被派去(sent)守在里面(in)，警觉瞭望。
Context & Register
语域：mixed 常见场景：军事或文学语境、计算机编程与数据处理、公共卫生与医学 该词作名词时语域随语境变化：军事或文学中多用于书面语，偏正式；计算机与数据处理领域属于专业术语；公共卫生中可指健康风险标志。日常对话中若指“哨兵/守卫”，guard 是比较常见的替代词。
Pronunciation & Spelling
None of these is a full rhyme with sentinel /ˈsɛntənəl/. Sentry, sentence, and sentiment genuinely match only its opening /sɛnt/. Sensitive is a useful spelling lookalike but is pronounced /ˈsɛnsətɪv/, not /ˈsɛntə-/. Kennel and channel share the written ending -nel but have different vowels: /ˈkɛnəl/ and /ˈtʃænəl/.
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.