🧩 词语组成解析
a. [医](病变细胞等)侵袭前的,蔓延前的
🗣️ 情景例句
She has now held the post of Prime Minister longer than anyone else this century.
她现在担任首相任期之长在本世纪是前所未有的。
Have you drunk any fruit juice.
你喝过果汁吗？
Some people on the bank called out to the man in the boat, but he did not hear them.
岸上的一些人对着小船上的人高喊，但他没有听见。