| 单词 |
rare as hen's teeth |
| 释义 |
rare as hen's teeth (as) rare as hens' teethIncredibly scarce or rare; extremely difficult or impossible to find. Support for the president is as rare as hens' teeth in this part of the country.See also: rare, teethrare as hen's teeth or scarce as hen's teeth OLD-FASHIONEDIf something is as rare as hen's teeth or as scarce as hen's teeth, it is extremely rare. Record companies are becoming as rare as hen's teeth. Note: Hens do not have teeth. See also: rare, teethrare (or scarce) as hen's teeth extremely rare. As hens do not possess teeth, the implication is that something is rare to the point of non-existence. The phrase was originally a US colloquialism, dating from the mid 19th century.See also: rare, teeth(as) rare/scarce as hen’s ˈteeth (old-fashioned) extremely rare: Critics always complain that good movies that the whole family can see together are as scarce as hen’s teeth.This refers to the fact that hens do not have teeth.See also: rare, scarce, teeth |
| 随便看 |
- atpase, cu(2+)- transporting, beta polypeptide
- atpase, cu++ transporting, alpha polypeptide
- atpase, cu++ transporting, beta polypeptide
- atpase, h+/k+ exchanging, alpha polypeptide
- atpase, h+/k+ exchanging, beta polypeptide
- atpase, h+/k+ transporting, alpha polypeptide
- atpase, h+/k+ transporting, beta polypeptide
- atpase, h+ transporting, 116kd
- atpase, h+ transporting, lysosomal
- atpase, h+ transporting, lysosomal 13kda, v1 subunit g1
- atpase, h+ transporting, lysosomal 13kda, v1 subunit g2
- atpase, h+ transporting, lysosomal 13-kda, v1 subunit g isoform 1
- atpase, h+ transporting, lysosomal 13-kda, v1 subunit g isoform 2
- atpase, h+ transporting lysosomal, member m
- atpase, h+ transporting, lysosomal, subunit a1
- atpase, h+ transporting, lysosomal v0 subunit a2
- atpase, h+ transporting, lysosomal v0 subunit a4
- atpase, h+ transporting, lysosomal (vacuolar proton pump) 16kd
- atpase, h+ transporting, lysosomal (vacuolar proton pump) 21kd
- atpase, h+ transporting, lysosomal (vacuolar proton pump) 31kd
- atpase, h+ transporting, lysosomal (vacuolar proton pump) 42kd
- atpase, h+ transporting, lysosomal (vacuolar proton pump) 9kd
- atpase, h+ transporting, lysosomal (vacuolar proton pump), member j
- atpase, na+/k+ transporting, alpha 1 polypeptide
- atpase, na+/k+ transporting, alpha 2 (+) polypeptide
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