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
But I'm bored.
但我感到无聊。
When I get sleepy,I'll probably get ready for bed.
当我磕睡时，我将上床。
Who's that boy over there?
那边的那个男孩是谁？