Throw doubt upon
产生怀疑
🧩 词语组成解析
throw
[θro]
vi. 投掷;丢;抛;
n. 投掷的距离;丢;
vt. 掷（色子）;抛;猛动（头、臂、腿）;使处于，使限于;
upon
[ə'pɑn]
prep. 在…上面;当…时候;
🗣️ 情景例句
I have a tourist visa.
旅游签证。
Was I supposed to help you today?
今天我想帮你忙。
Great efforts ensure the success of our work.
巨大的努力确保了我们工作的成功。