1
at loggerheads (with sb)
固定短语，意为“争执”，后跟with表示与某人争执。
The two parties are at loggerheads over the new policy.
双方在新政策上意见不合。
蠵龟
先理解核心含义，再看它在真实句子里的用法。
蠵龟
very large carnivorous sea turtle; ranges widely in warm open seas
The two parties are at loggerheads over the new policy.
双方在新政策上意见不合。
一种金属工具,由长杆和球状端头构成,在火中烧热后浸入某物(如沥青或液体)以熔化或加热。
A metal tool consisting of a long rod with a bulbous end that is made hot in a fire, then plunged into some material (such as pitch or a liquid) to melt or heat it.
捕鲸船上用于固定鱼叉绳的柱子。
A post on a whaling boat used to secure the harpoon rope.
用作多种大头动物的名称。
Used as the name of various animals with large heads.
A loggerhead emerged from the surf to lay its eggs on the beach.
一只蠵龟从海浪中爬出来，在沙滩上产卵。
The research team tracked a loggerhead by satellite for over a year.
研究团队用卫星追踪一只蠵龟超过一年。
Loggerheads are often found in warm open seas.
蠵龟常见于温暖的开放海域。
固定短语，意为“争执”，后跟with表示与某人争执。
The two parties are at loggerheads over the new policy.
双方在新政策上意见不合。
常与turtle连用，指一种大型海龟。
The loggerhead turtle is an endangered species.
蠵龟是一种濒危物种。
作名词表示“傻瓜”，现已较少单独使用。
Don't be such a loggerhead!
别这么傻了！
Not this
He is loggerhead.
Use this
He is a loggerhead.
英语单数可数名词前需要冠词，这里缺少不定冠词'a'，导致句子不完整。
Not this
Many loggerhead live in the sea.
Use this
Many loggerheads live in the sea.
可数名词复数形式需加-s，表示多个个体。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
蠵龟
The loggerhead turtle is an endangered species that nests on warm beaches.
蠵龟是一种濒危物种，在温暖的海滩上筑巢。
呆头伯劳
We spotted a loggerhead shrike sitting on a fence post.
我们看到一只呆头伯劳停在栅栏柱上。
（与…）意见不合，争执不下
The two countries remain at loggerheads over trade policy.
两国在贸易政策上仍争执不下。
开始争吵，闹翻
They came to loggerheads over the budget.
他们因预算问题发生了争执。
Use loggerhead naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 loggerhead 拆成 logger(伐木工)+head(头)来记：蠵龟的大头或工具的圆头，都像伐木工的大脑袋，核心是“大头”。
语域：neutral 常见场景：marine biology、wildlife conservation、science news 在指代蠵龟时，loggerhead 为中性常用词，多用于海洋生物、环保或科普语境，常以 loggerhead sea turtle 或 loggerhead turtle 的形式出现；日常口语中单独使用 loggerhead 较少，为避免歧义，一般会加上 sea 或 turtle。
这些词都与 loggerhead 一样以 -head 结尾，其中 -head 通常读 /hɛd/。注意，它们并非严格意义上的全词押韵，因为重音都在前面的音节。另需注意 forehead 常读作 /ˈfɒrɪd/，与拼写所示的 /hɛd/ 不同，是典型的拼写相似但读音不同的词。
Dictionary facts from ECDICT, WIKTIONARY.