1 sentence

1. 他努着劲儿，好不容易才把那个生锈的螺丝拧开。

   tā nǔ zhe jìn r, hǎo​bù​róng​yì cái bǎ nà​ge shēng​xiù de luó​sī nǐng​kāi.

   He strained with all his might and finally managed to unscrew that rusty screw.

   Source: Dong Chinese Dictionary