?authentic的中文翻譯是“真實的”或“可信的”。

用法：

authentic是一個形容詞，用來描述事物的真實性和可靠性。它通常用來形容人、物或信息的真實性，表達對事物真實性的肯定。

例句1-5句且中英對照：

1. The painting was confirmed to be authentic by experts. 這幅畫被專家確認為真跡。

2. The company only sells authentic products. 這家公司只銷售真正的產品。

3. He is known for his authentic storytelling style. 他以其真實的講故事風格而聞名。

4. The document is considered to be an authentic record of the event. 這份文件被認為是的真實記錄。

5. She always speaks from her heart, her words are always authentic and sincere. 她總是發自內心地說話，她的話總是真誠而坦率。

同義詞及用法：

1. Genuine：也可以表示“真正的”、“純正的”，多用來形容物品或人品質。：She is a genuine friend to me.

2. Reliable：也可以表示“可靠的”、“可信賴的”，強調對某人或某事物有信任感。：He is a reliable source of information.

3. Valid：也可以表示“有效的”、“合法的”，多用來描述證據、理由等。：The evidence presented in court was valid.

4. Accurate：也可以表示“準確的”、“精確的”，多用來形容數據或信息。：The report contains accurate information.

5. Trustworthy：也可以表示“值得信賴的”、“可信賴的”，強調對某人或某事物有信任感。：He is a trustworthy person.