🧩 词语组成解析
upon
[ə'pɑn]
prep. 在…上面;当…时候;
a. 人们的;自己的
guard
[ɡɑrd]
n. 警卫;狱吏,看守;护卫队;防护装置;
vt. 保卫,守护;看守;加防护装置;谨慎使用;
vi. 警惕;警卫;
🗣️ 情景例句
What's your trade-in policy?
这里对汽车是怎样做折价处理的?
How much paint did you want to order?
你要订购多少油漆?
They're said to be very good. What time does the performance start?
据说他们很棒。演出什么时候开始?