Trickiest
a. 狡猾的( tricky的最高级 ); （形势、工作等）复杂的; 机警的; 微妙的
🗣️ 情景例句
There are abundant free materials available on the internet.
因特网上有丰富的免费资料提供。
OK. You'll have to use a credit card or leave a $100 deposit.
好。你必须使用信用卡，否则要付100美元的押金。
The dish now had to be lifted vertically because one edge was resting against the side of the canal.
这次，盘子必须垂直吊出水面，因为盘子的一边紧靠着运河河岸。