Previewing
n. 预视；预观察
🗣️ 情景例句
I've never worn them before.
我从来没有戴过这个。
Excuse me. Can you tell me where Main Street is?
劳驾，你能告诉我正街在哪里吗？
and a very firm hand must be employed in the early stages.
因此开始阶段需要有一位强有力的老手。