| 1 | Searching for one man in this big city is like looking for a needle in a haystack. | |
| 2 | Sometimes trying to find something on the worldwide web is like trying to find a needle in a haystack. | |
| 3 | And finding this tiny number of mutations was more difficult than finding an ant's egg in an emperor's rice store. | |
| 4 | This has allowed us to find these new mutations, which are like very small needles in a very large haystack. | |
| 5 | Didn't he know that it was next to impossible to find that particular antique? |