一進一退

いっしんいったい

now advancing and now retreating, ebb and flow, seesawing, taking alternately favorable and unfavorable turns

進退

しんたい

movement, course of action, advance or retreat

二進

にしん

binary

出処進退

しゅっしょしんたい

advancing and retreating, appearance and disappearance, one's daily activities, one's course of action, one's attitude

坐作進退

ざさしんたい

deportment, behavior, carriage

進退伺い

しんたいうかがい

informal resignation, unofficial resignation

寸進尺退

すんしんしゃくたい

one step forward, many steps backward, little to gain and much to lose

挙措進退

きょそしんたい

behavior, bearing, demeanor

進退両難

しんたいりょうなん

being driven to the wall, finding oneself between the devil and the deep blue sea, finding oneself between a rock and a hard place

進退問題

しんたいもんだい

a question of whether or not someone should resign

進退去就

しんたいきょしゅう

one's course of action, deciding what to do with oneself, whether staying in the present position or leaving it

二進法

にしんほう

binary number system

二進木

にしんぎ

binary tree

一二

いちに

the first and second, a few

二進化十進数

にっちかじゅうしんすう

BCD

二進も三進も

にっちもさっちも にしんもさんしんも

in no way

進退窮まる

しんたいきわまる

to be at a loss, to be in a corner

十二進法

じゅうにしんほう

duodecimal

二五進法

にごしんほう

bi-quinary system