be in a jam
表示处于困境，常与 be 动词连用。
I'm in a jam and need your help.
我陷入了困境，需要你的帮助。
堵塞；拥堵；卡住；困境；窘境；拥挤的人群；人堆；创意协作活动；即兴创作会；大力扣篮；灌篮
A preserve made from crushed fruit.
困境
A difficult situation.
碎水果制成的果酱
preserve of crushed fruit
堵塞；拥堵；停滞
A blockage, congestion, or immobilization.
困境的非正式说法
informal terms for a difficult situation
集思广益的合作活动
An informal event where people brainstorm and collaborate on projects.
密集的人群
a dense crowd of people
大力扣篮
A forceful dunk.
得分的比赛回合
A play during which points can be scored.
需要将肢体楔入狭小空间的动作
Any of several manoeuvres requiring wedging of an extremity into a tight space.
I spread some strawberry jam on my toast for breakfast.
早餐时，我在吐司上涂了一些草莓果酱。
用法提示：jam在此作名词，意为果酱，指一种甜味的涂抹酱。
My grandmother made homemade apricot jam, which is very delicious.
奶奶自制了杏子果酱，非常美味。
用法提示：jam在此作名词，意为果酱，指用水果制成的甜味食品。
This shop sells various handmade jams, including blueberry and peach flavors.
这家店出售各种手工果酱，包括蓝莓味和桃子味。
用法提示：jams是jam的复数形式，指多种果酱。
表示处于困境，常与 be 动词连用。
I'm in a jam and need your help.
我陷入了困境，需要你的帮助。
表示道路上的交通堵塞，on 后接具体道路。
We were stuck in a traffic jam on the highway.
我们被堵在高速公路上。
作“果酱”讲时通常不可数，前面不加 a/an。
She spread jam on her toast.
她把果酱涂在吐司上。
Preserve通常指整块或大块水果制成的蜜饯，比jam更稠且颗粒感强；jam更强调碎果肉。
Jelly由果汁加糖和果胶制成，透明且无果肉颗粒；jam含碎果肉，口感不同。
Marmalade特指用柑橘类水果（如橙子）制作的果酱，通常带果皮；jam则不限水果种类。
Conserve类似jam但常含多种水果、坚果或干果，质地更丰富；jam偏单一水果。
grammar · medium
易错句子I'm in jam — I lost my wallet and my keys.
正确表达I'm in a jam — I lost my wallet and my keys.
固定短语 in a jam 表示“陷入困境”，其中 jam 是可数名词，必须带不定冠词 a；汉语说“有麻烦、有困难”时不加冠词，所以容易漏掉 a。
grammar · medium
易错句子I met a traffic jam on my way to work.
正确表达I got stuck in a traffic jam on my way to work.
汉语“遇到堵车”直译成 meet a traffic jam 不符合英语搭配；表示被堵在路上，英语用 get stuck in a traffic jam 或 be caught in a traffic jam。
grammar · medium
易错句子Could you buy a jam at the supermarket?
正确表达Could you buy some jam at the supermarket?
指“果酱”这一物质时，jam 是不可数名词，要用 some jam 或 a jar of jam；汉语名词本身不区分可数与否，因此容易误加不定冠词 a。
对应 jam 的‘困境’义
对应 jam 的‘拥挤的人群’义
草莓酱
I spread some strawberry jam on my toast.
我在吐司上抹了些草莓酱。
覆盆子酱
She bought a jar of raspberry jam at the farmer's market.
她在农贸市场买了一罐覆盆子酱。
抹果酱
He spread jam on the bread and handed it to his daughter.
他把果酱抹在面包上，递给了女儿。
交通堵塞
We were stuck in a traffic jam for over an hour.
我们被堵在交通堵塞中一个多小时。
陷入困境
He lost his wallet and was really in a jam.
他丢了钱包，真的陷入了困境。
果酱常涂抹在烤面包上食用。
果酱与黄油常一起用作面包抹酱。
果酱是常见的面包抹酱。
果酱可用于制作甜味三明治。
果酱是早餐中常见的配品。
陷入困境
I'm in a jam because I lost my wallet and have no way to get home.
我陷入困境，因为丢了钱包，没法回家。
即兴演奏会
The musicians got together for a spontaneous jam session after the concert.
音乐会后，乐手们聚在一起进行了一场即兴演奏。
交通堵塞
We were stuck in a traffic jam for over an hour on the way to the airport.
我们在去机场的路上堵车堵了一个多小时。
规则是：明天有果酱，昨天有果酱，但今天从来没有果酱。
From Lewis Carroll's 'Through the Looking-Glass', this quote uses 'jam' (fruit preserve) in a logical paradox about things promised but never delivered.
出自刘易斯·卡罗尔的《爱丽丝镜中奇遇》，这句话用果酱（jam）来比喻那些承诺但永远不会实现的事情。
Choose the next layer that will help you use jam with more confidence.
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摆脱困境
She borrowed some money to get out of a jam.
她借了些钱来摆脱困境。