They concern the common things of life, and are the stockintrade of all who speak the language.
它们与生活中常见的事情有关，是说这种语言的人都具备的。
2
To steer clear of dissipation and guard my health of body and peace of mind as my most precious stockintrade.
避免无谓的体力和精力消耗，身体的健康和思绪的平静是最宝贵的财富。
3
For many years the argument that the clouds over Hiroshima and Nagasaki quickly ended the war has been a stockintrade of discussions over the role of nuclear weapons.