firsthand

形容词 firsthand:

1. received directly from a source

副词 firsthand:

1. at first hand or directly

1. I learned the news about her mother's illness firsthand from Lena.
   我直接从丽娜那里了解到她母亲生病的消息。

first.hand

adj.（形容词）
Received from the original source:
第一手的，直接的：从来源处接收到的：
例句：
firsthand information.
第一手资料

【引伸】
first.hand.
adv.（副词）