🧩 词语组成解析
river
['rivə]
n. 河，江;溪，巨流;
dolphin
['dɑlfɪn]
n. 海豚;（码头的）系船柱;
🗣️ 情景例句
You're sure Alexandra's going to be surprised?
你确定Alexandra会很惊讶吗？
The two parties involved in a contract have the obligation to execute the contract.
合同双方有义务履行合同。
But as they soon discovered, disguises can sometimes be too perfect.
但他们很快就发觉，化装的效果有时过分完美了。