instances
An instance is a particular example or occurrence of something.
example , case , occurrence
an investigation into a serious instance of corruption.
对一例严重腐败事件的调查。
The committee reported numerous instances where key information was not shared.
该委员会报告了关键信息未被公开的大量事例。
for instance
You use for instance to introduce a particular event, situation, or person that is an example of what you are talking about.
for example
In sub-Saharan Africa today, for instance, gross investment accounts for roughly 15 of national income.
例如,在如今的撒哈拉以南的非洲国家,总投资大约占国民收入的15%。
There are a number of improvements; for instance, both mouse buttons can now be used.
产品有了许多改善,例如,两个鼠标按键现在都能用了。
TB is an infinitely bigger problem than, for instance, AIDS.
肺结核是一个比艾滋病等其他疾病严重得多的问题。
in the first instance
You say in the first instance to mention something that is the first step in a series of actions.
In the first instance your child will be seen by an ear, nose and throat specialist.
你的孩子首先要由耳鼻喉专家诊查。