The phrase "a system that sometimes" is correct and usable in written English.
It can be used when describing a system that does not consistently perform a certain action or function, indicating variability in its operation.
Example: "The software is a system that sometimes fails to save user progress, leading to frustration among users."
Alternatives: "a system that occasionally" or "a system that at times".
It is a system that sometimes spins out of control if the computerized sellers cannot find enough buyers.
In recent years, scores of petitioners have turned to violence after they found themselves stymied by a system that sometimes seeks to silence them through stints in illegal "black" jails or labor camps.
Enthusiasts will argue that it ruins brake response and pedal feel in most cars, and everyday drivers can be caught off guard by a system that sometimes applies much more stopping force than expected.
How much choice is there for people at the bottom in a system that sometimes feels so rigged by the top?
Traditionally, pardons have most often been viewed in a favorable light, Christmas confections that prove there is a safety valve in a legal system that sometimes makes mistakes.
"Disaster capitalism," as she calls it, is a violent system that sometimes requires terror to do its job.
Imbalances between the singers and orchestra, and a sound system that sometimes produced obscuring echoes, were the only problems with the rewarding performance of "Show Boat," the landmark 1927 musical by Jerome Kern and Oscar Hammerstein II, presented Tuesday night in a concert adaptation by the Pulitzer-winning playwright Doug Wright as a benefit for Carnegie Hall.
Canadians were already getting fed up with an overburdened system that sometimes made dubious calls for instance, admitting a mentally ill South Korean woman on the grounds that psychiatric patients and their families are ostracized back home.
He emerged despite an N.F.L. system that sometimes relies too heavily on numbers and not enough on what happens on the field, which should be the bottom line.
A fifth segment, "Children Waiting," presents a collage of faces and voices representative of the nearly half-million children, many of them older, who get lost in the cogs of a foster-care system that sometimes fails to provide their most basic needs.
But Mr. Miu's predicament illustrates a larger danger facing Western companies here: crosscurrents developing in the traditionally vague, indirect and informal way business deals are often done here and the requirements of a more legalistic court system that sometimes intervenes precipitously in disputes.
