In this example, a extends B; however, the same error would still occur if a referenced B in any other way — as a method parameter, for example, or as an instance field.

在这个例子中，A扩展了b；但是，即使A用其他方式引用B，也会出现同样的问题——例如，以方法参数引用或作为实例字段。

youdao

B: We need to know how long this product will last in the field.

B：我们需要知道产品在使用中可以有多长的寿命。

youdao

They include embedded 16GB memory, large battery capacity of 1850mAh, NFC (Near Field Communication), WiFi a/b/g/n support, and Bluetooth 3.0+HS.

包括16 GB的嵌入式内存 1850毫安的超大电池容量， NFC(近距离通信) 支持无线a / b / g / n格式以及蓝牙3.0头戴式耳机。

youdao

The general portfolio includes Berkshire Hathaway ( BRK.B), which pays no dividend, while the tax-managed portfolio substitutes dividend-yielding oil field services provider Schlumberger ( SLB) for Berkshire.

FORBES: The Corporate Tax Debate? Ignore It and Think About Your Taxes