Sentence examples for frequently difficult to know from inspiring English sources
In this situation, it is frequently difficult to know whether the cell population after an extended cultivation time is still identical to the RASF population shortly after isolation from the tissue.
Workers in the warehouses frequently complain that it is difficult to know who is in charge at the distribution centers, where multiple subcontractors operate in the same building and workers receive different pay depending on which agency they work with, although the jobs are almost identical.
As most previous studies of experimental TSE in sheep do not include detailed clinical assessments, it is difficult to know how frequently pre-clinical cases may be detected by postmortem brain tests.
After about 1530, Dosso frequently collaborated with his brother Battista, so it is difficult to know which painter is responsible for which elements of their joint work.
Older people find it difficult to know where to turn for help, and frequently that help comes too late, leading to so-called bed-blocking in hospitals.
"In this situation of an ex-Mukhabarat officer, it's very difficult to know if he is sincere," said Ghanim al-Najjar, a Kuwaiti consultant with Amnesty International who frequently works in the Basra area.
As a result, it is difficult to know to what extent our conclusions are affected by the hypoperfusion and altered cerebral autoregulation frequently associated with cognitive decline [ 59].
"It's very difficult to know".
Difficult to know precisely what.
