1 sentence

1. 他至今还没有回信，由此可见他并不想参加这个活动。

   tā zhì​jīn hái méi​yǒu huí​xìn, yóu​cǐ​kě​jiàn tā bìng bù xiǎng cān​jiā zhè​ge huó​dòng.

   He hasn't replied yet, which shows he doesn't want to participate in the event.

   Source: Dong Chinese Dictionary