You use standard to describe things which are usual and normal.
It was standard practice for untrained clerks to advise in serious cases such as murder.
让未经训练的职员们在诸如谋杀等重案中提出建议是常规的做法。
the standard format for a scientific paper.
科技论文的标准格式。
A standard work or text on a particular subject is one that is widely read and often recommended.
At twenty he translated Euler's standard work on algebra into English.
20岁时,他把尤勒的权威代数著作译成了英语。
standards
A standard is a level of quality or achievement, especially a level that is thought to be acceptable.
The standard of professional cricket has never been lower.
职业板球的水平从来没这么低过。
improvements in the general standard of living.
总体生活水平的改善。
There will be new national standards for hospital cleanliness.
有关医院清洁的新国家标准将会出台。
Standards are moral principles which affect people's attitudes and behaviour.
My father has always had high moral standards.
我父亲一直有着很高的道德水准。