中规中矩的英文：
straight and narrow
- Those young ladies are much too prim and proper to enjoy such a rude joke.
这些年轻的女士们比较拘谨，行为中规中矩，欣赏不了这种粗俗的玩笑。
adj. 直的；正直的；直率的；连续的；整齐的
adv. 直接地；坦率地；立即；不断地
n. 直线
- straight or on the rock
纯的或加冰块 - make(sth)straight or level
使（某物）变直或变平 - Straight trees have crooked roots
直树也有曲根 - You cannot be lost on a straight road
走直路,不迷途 - These trees are noted for their straightness and hardness.
这些树的特点是树干挺直，木质坚硬。
adj. 狭窄的；狭隘的，有局限的；勉强的；贫乏的；仔细的；刻板的
n. 狭窄部分；峡谷，隘路
v. 变窄；使有局限；缩小；缩减
- narrow majority
勉强的多数 - narrow opinions.
刻板的观念 - The doctor narrowed his interest.
医生缩小了他的研究范围。 - A narrow part, such as the chokebore of a firearm.
细颈部如枪的绞筒等狭窄的部分 - The narrow street has been expanded.
这条窄道已经放宽了。