gm is a short written form of gram or grams — the small unit we use for how heavy something is. There are 1,000 grams in a kilogram. You meet it on food packets, in recipes, and in science class: 250 gm of flour, a tablet of 500 gm, and so on.

gm is a short written form of gram or gramsgm是gram或grams的書寫縮寫—— the small unit we use for how heavy something is也就是我們用來說東西有多重的小單位。 There are 1,000 grams in a kilogram一公斤裡有一千公克。 You meet it on food packets, in recipes, and in science class你會在食品包裝、食譜和科學課上看到它： 250 gm of flour, a tablet of 500 gm, and so on像是250 gm的麵粉、500 gm的一片藥錠等等。

In careful science writing, people often use just g, which means the same thing; gm is the slightly older or more ‘spelled-out’ short form, and you still see it in everyday British writing.

In careful science writing在講究的科學寫作裡， people often use just g大家常常只用g， which means the same thing意思是一樣的； gm is the slightly older or more 'spelled-out' short formgm是稍微舊一點、比較「拼出來」的縮寫， and you still see it in everyday British writing在日常英式英文裡還是看得到。

It is not a spoken word you stress. You read it as ‘gram’ or ‘grams’.

It is not a spoken word you stress它不是你會唸重音的口語詞。 You read it as 'gram' or 'grams'你會唸成『gram』或『grams』。

Do not mix it up with GM in capital letters, which is a different short form (a car company, or ‘genetically modified’). This gm is small letters, and it only means the weight.

Do not mix it up with GM in capital letters不要跟大寫的GM搞混， which is a different short form那是不同的縮寫 (a car company, or 'genetically modified')（一家車廠，或「基因改造」）。 This gm is small letters這裡講的gm是小寫， and it only means the weight只表示重量。