Correct

老当益壮

/ lǎo dāng yì zhuàng /
Strokes

Definition

old but vigorous (idiom); hale and hearty despite the years

Example

Definition

be old but vigorous; be aged but full of sap; be old in age, but young in spirit; there's many a good tune played on an old fiddle

1
zhì
地质
duì
队里
yǒu
fēnghuázhēngmào
风华正茂
de
hòushēng
后生
  
,
yǒu
lǎodāngzhuàng
老当益壮
de
qiánbèi
前辈
  

In the geological prospecting team, there are promising young members as well as vigorous veteran members.

2
Qíongdāngjiān
穷当益坚
  
,
lǎodāngzhuàng
老当益壮

all the more determined in adversity and all the more aspiring in one's old age