在她离开前，我们忘了交换电子邮件地址。
We forgot to exchange emails before she left.
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exchange英 /ɪksˈtʃeɪndʒ/|美 /ɪksˈtʃeɪndʒ/
解释
exchange 是动词，意思是"交换、互换"，指双方互相给予或接收某物。
We forgot to exchange emails before she left.
exchange 是动词，意思是"交换、互换"，指双方互相给予或接收某物。