4 sentences

1. 他拉下闸，截断了流向麦田的水流。

   tā lā​xià zhá, jié​duàn le liú​xiàng mài​tián de shuǐ​liú.

   He pulled down the sluice gate, cutting off the water flow to the wheat field.

   Source: Dong Chinese Dictionary

2. 他正要解释，却被一阵尖叫声截断了。

   tā zhèng yào jiě​shì, què bèi yī zhèn jiān​jiào​shēng jié​duàn le.

   He was about to explain but was cut off by a scream.

   Source: Dong Chinese Dictionary

3. 工人们用锯子把木头截断了。

   gōng​rén men yòng jù​zi bǎ mù​tou jié​duàn le.

   The workers sawed the wood into segments.

   Source: Dong Chinese Dictionary

4. 在进行数值计算时，我们需要截断小数点后的多余位数。

   zài jìn​xíng shù​zhí jì​suàn shí, wǒ​men xū​yào jié​duàn xiǎo​shù​diǎn hòu de duō​yú wèi​shù.

   When performing numerical calculations, we need to truncate the extra decimal places.

   Source: Dong Chinese Dictionary