Trial and error
大学 College反复试验
🧩 词语组成解析
and
[ənd, ən,ænd]
conj. 和，与;而且;于是，然后;因此;
🗣️ 情景例句
If you don't apply to the relevant department your passport will never be approved.
如果你不向有关部门申请，你就得不到护照。
What's your job?
你的工作是什么？
Then the Class 2 runner dropped his stick on the ground when he was passing it on to the fourth runner.
忽然2班的运动员在传棒给第四个运动员时，把棒弄掉到了地上。