talk speak 类似的都可以，主要还是看你想怎么说，具体情境如何
talk on the phone
talk on the phone
==talk by phone
有the,前面就要用on,没有the,就要介词by
相同的情况还有;
travel / come / go ON the / a motorbike (== by motorbike)
talk on the phone
talk on the phone
==talk by phone
有the,前面就要bai用on,没有duthe,就要介词zhiby
相同的情况还dao有;
travel / come / go ON the / a motorbike (== by motorbike)
Talking on the phone
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