名詞 notation:

1. a technical system of symbols used to represent special things
   同義詞：notational system
2. a comment or instruction (usually added)
   同義詞：note, annotation
3. the activity of representing something by a special system of marks or characters

1. The authors wish you to read it with a pencil in your hand, for you will often be asked to make certain notations, to write answers to particular questions.
   作者們希望你在讀這本書的時(shí)候手里要拿上一支鉛筆，因?yàn)槲覀円竽憬?jīng)常做點(diǎn)筆記，或是將一些具體問題的答案寫下來。
2. A notation, usually a question mark, calling attention to an item in order to question its validity or accuracy.
   疑問號(hào)一個(gè)記號(hào)，通常為問號(hào)，以引起對(duì)某一事物的注意以便就其有效性或準(zhǔn)確性提出質(zhì)疑

no.ta.tion

n.（名詞）

A system of figures or symbols used in a specialized field to represent numbers, quantities, tones, or values:
標(biāo)志：圖案或符號(hào)系統(tǒng)，用在特殊領(lǐng)域表示數(shù)字、數(shù)量、語氣或價(jià)值：
例句：
musical notation.
音樂符號(hào)

The act or process of using such a system.
注解：使用這套符號(hào)的行為或過程
A brief note; an annotation:
記號(hào)；符號(hào)：
例句：
marginal notations.
邊頁(yè)的注解

來源：
Latin not3tiô not3tiôn-
拉丁語 not3tiô not3tiôn-
from not3tus [past participle of] not3re [to note]
源自 not3tus [] not3re的過去分詞 [注解]
from nota [note] * see note
源自 nota [注解] *參見 note

【引伸】
nota.tional
adj.（形容詞）