I
the letter I
Letter name · 字母名称the 9th letter of the English alphabet
英文字母 I（第 9 个字母）
Source: BridgeDict Latin alphabet catalog
英文字母I
先理解核心含义，再看它在真实句子里的用法。
英文字母I
the 9th letter of the English alphabet
Doctors recommend adding iodine to your diet to prevent thyroid problems.
医生建议在饮食中添加碘以预防甲状腺问题。
The noun sense means the letter itself. Scientific meanings appear only when their capitalization exactly matches your query.
the 9th letter of the English alphabet
英文字母 I（第 9 个字母）
Source: BridgeDict Latin alphabet catalog
the chemical symbol for iodine, atomic number 53
化学元素符号：碘（原子序数 53）
Source: IUPAC Periodic Table拉丁字母 I/i 的名称。
The name of the Latin script letter I/i.
自我。
The ego.
一种非金属元素,属于卤素；主要用于医学、摄影和染料；自然界中仅以小量组合存在(如海水或岩石中)
a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)
最小的整数或表示该数字的数字
the smallest whole number or a numeral representing this number
This antiseptic contains iodine and can be used to clean wounds.
这种消毒剂含有碘，可用于清洁伤口。
Seaweed is a natural source of iodine.
海藻是碘的天然来源。
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字母 I
The letter I comes between H and J in the alphabet.
字母 I 在字母表中位于 H 和 J 之间。
大写字母 I
Make sure to write a capital I when you talk about yourself.
谈论自己时，一定要写大写字母 I。
工字梁
The garage roof is supported by steel I-beams.
车库屋顶由钢制工字梁支撑。
一丝不苟；注重细节
She always dots the I's and crosses the T's.
她做事总是一丝不苟。
符号 I（碘）
On the periodic table, the symbol I stands for iodine.
在元素周期表上，符号 I 代表碘。
一丝不苟；注重细节
Before you submit the report, make sure to dot the i's and cross the t's.
提交报告之前，务必一丝不苟地检查所有细节。
I 在 E 前面，C 后面除外。
The mnemonic "I before E except after C" is still the first thing many people recall when spelling "believe" or "receive".
拼写 "believe" 或 "receive" 时，很多人最先想起的仍然是那句口诀“I 在 E 前面，C 后面除外”。
A、E、I、O、U，有时还有 Y。
When asked to name the English vowels, the child recited, "A, E, I, O, U and sometimes Y."
当被要求说出英语元音时，孩子背道：“A、E、I、O、U，有时还有 Y。”
Use I naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
字母I像一根直立的火柴，既记住它是第9个字母，也记住化学符号I代表碘。
语域：neutral 常见场景：字母表或拼写场合、化学式或科学标记 该词用作名词时指英文字母 I 或化学元素碘的符号，文体上属中性，正式与非正式场合均可；在化学式中多作为元素符号出现，比较常见于专业标记。
作为字母或元素名词时，通常不可数；作为数字名词时可数，但较少用。
Dictionary facts from AI_FALLBACK, DICTIONARY_API_DEV, ECDICT, WIKTIONARY, BridgeDict Latin alphabet catalog, IUPAC Periodic Table.