Sector scanning（）：n. - 完整释义与助记

🧩 词语组成解析

sector ['sɛktɚ]

n. 部门;领域;防御地区;扇形;

sect切，割 + or 表示物 →把圆切开 → 扇形

scanning

[计] 扫描\\n[医] 断续言语, 扫描

I received a letter from my parents this morning.

今天早上我收到父母一封信。

The data confirm that this product is safe and effective.

数据证实此种产品安全有效。

I have just received a letter from my old school, informing me that my former headmaster,

我刚刚收到母校的一封信，通知我说以前的校长

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