noun, adverb
usually; ordinarily; at all times
Adverbial use meaning that something is normally or consistently the case. It is somewhat more formal or written than everyday いつも.
この店は常時、二十種類以上のパンを置いている。
This shop usually stocks more than twenty kinds of bread.
警備員が常時巡
Security guards patrol at all times.
noun which may take the genitive case particle 'no'
continuous; 24-hour; always on
Used before another noun or in compounds for systems, operation, care, connection, monitoring, and similar states that continue without interruption.
常時接続のインターネット環境が必要です。
An always-on internet connection is required.
その患者には常時介護が必要だ。
That patient needs constant care.
Means 'as needed' or 'from time to time,' not continuously; it contrasts with 常時, which implies ordinary or constant availability.
A Sino-Japanese compound of 常, associated with regularity or constancy, and 時, 'time'; literally, roughly 'constant times' or 'ordinary times.'