2 sentences for 卡 (kǎ — lag)

1. 这台电脑用久了会卡。

   zhè tái diàn​nǎo yòng jiǔ le huì kǎ.

   This computer will lag after being used for a long time.

   Source: Dong Chinese Dictionary

2. 网络太差了，视频播放非常卡。

   Wǎng​luò tài chà le, shì​pín bō​fàng fēi​cháng kǎ.

   The network is too slow, so the video playback is very laggy.

   Source: Dong Chinese Dictionary