橡实之外壳的英文：
acorn cup

acorn是什么意思：
n. 橡实,橡子

Every oak must be an acorn
万丈高楼平地起

Every oak must have been an acorn.
凡橡树必曾是橡实。

The boy teases the dog by pebble it with acorn.
男孩子们用橡树果打狗逗它玩。

An indehiscent,hard - shelled,one - loculated,one - seeded fruit,such as an acorn or a hazelnut.
坚果一种不开裂，硬壳，单隔室，单种子的果实，如橡树果实或榛子

A small cup - shaped structure or organ, such as the cup at the base of an acorn or one of the suckers on the feet of certain flies.
杯形器具一种小型的杯状结构或器官，如橡树果实茎部的杯状物或位于某些苍蝇脚上的吸盘之一

cup是什么意思：
n. 杯子；奖杯；一杯（的量）
v. 使成杯状

A cup or goblet.
茶杯或高脚酒杯

These cups chip easily.
这些杯子容易碎裂。

clutch controlling cup
离合器控制碗

One's cup of tea
一个人的口味

That's not my cup of tea.
那不是我喜欢的人/事