一挺机枪

a machine gun

挺着脖子

holding one's neck straight

挺着胸

with one's chest thrown out

挺胸

throw out one's chest

挺着大肚子

with a heavily pregnant stomach

痛得挺不住

too much pain to cope with

不管多么困难也得挺到底

must cope no matter how many difficulties there are

你们不要为我担心，我能挺得住。

Don't worry about me – I can manage.

硬挺着不下火线

grit one's teeth and not leave the front line

英挺

outstanding and heroic

挺然屹立

stand tall and erect

挺高兴

very happy

花儿挺香。

The flowers smell nice.

情况挺好。

Things are good.

干活挺卖力气

work very vigorously