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num + PB
PB作为数据存储单位，常跟在数字后使用。注意PB有1000TB和1024TB两种定义。
The server has 10 PB of storage.
这台服务器有10拍字节的存储空间。
化学元素铅（符号Pb）
先理解核心含义，再看它在真实句子里的用法。
化学元素铅（符号Pb）
the chemical element lead (symbol Pb)
The server has 10 PB of storage.
这台服务器有10拍字节的存储空间。
一种柔软、重、有毒、可锻的金属元素；新切割时呈蓝白色,但很快变暗灰色
a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey
等于1000太比特或10^15比特的信息单位
a unit of information equal to 1000 terabits or 10^15 bits
等于1000太字节或10^15字节的信息单位
a unit of information equal to 1000 terabytes or 10^15 bytes
The doctor tested the patient's blood for elevated levels of PB.
医生检测了患者血液中铅（Pb）的含量是否升高。
Our new server farm has a storage capacity of 20 PB.
我们的新服务器群拥有20拍字节的存储容量。
Old paint often contains PB, which is harmful if ingested.
旧油漆常含有铅，摄入后有害健康。
PB作为数据存储单位，常跟在数字后使用。注意PB有1000TB和1024TB两种定义。
The server has 10 PB of storage.
这台服务器有10拍字节的存储空间。
在化学元素符号中，PB表示铅，源自拉丁语plumbum。
PB is the chemical symbol for lead.
PB是铅的化学符号。
PB修饰名词时，表示该名词相关的容量单位为拍字节。
We use a PB hard drive for large backups.
我们使用拍字节硬盘进行大型备份。
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Dictionary facts from ECDICT, WIKTIONARY.