🧩 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
Let me see -- ASPCA....
让我瞧瞧 ASPCA ……
I'm sorry, but I think she's stepped out.
对不起，我想她出去了。
At the moment, they cover every inch of floor space and I actually have to walk on them to get in or out of the room.
这会儿，书把地板的每一点空隙都占据了，我实际上是踩着这些书进出房间的。