这个箱子沉甸甸的,我需要帮忙搬它。
zhègè xiāngzǐ chéndiàndiàn de , wǒ xūyào bāngmáng bān tā 。
This box is heavy; I need help moving it.
她的心情沉甸甸的,似乎有很多烦恼。
tāde xīnqíng chéndiàndiàn de , sìhū yǒu hěnduō fánnǎo 。
Her mood is heavy; it seems she has a lot of worries.
这条鱼沉甸甸的,抓起来很费劲。
zhè tiáo yú chéndiàndiàn de , zhuāqǐlái hěn fèijìn 。
This fish is heavy; it's very difficult to catch.