Some books are for intensive study and some are for cursory reading.

有的书必须精读，有的只要稍加涉猎即可。

《新英汉大辞典》

Turns out the rule holds: he'd had nine years of intensive study.

10年定律是适用的：他此前进行过9年的集中强化学习。

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This database will enable a more intensive study to be carried out.

该数据库将使更深入细致的研究成为可能。

youdao

Micro-scholarships will support intensive language training programs for Indonesians, and for more Americans to study there.

VOA: special.2011.04.14

A new study looked at a single day of more than 1,200 intensive care units, or ICUs,in 75 countries.

VOA: standard.2009.12.08

He and other researchers found that more than half of some 14,000 patients in the study on that one day, developed infections in intensive care units.

VOA: standard.2009.12.08

Every aspect of the design followed intensive study of the original architecture and the collection for relevance, not reproduction.

WSJ: Barnes Collection | Tod Williams | Billie Tsien | The New Barnes Shouldn't Work��But Does | By Ada Louise Huxtable

Since the early 1980s Exxon has done intensive study of iceberg hazards in the region, working in conjunction with Norwegian and Russian scientists.

FORBES: Exxon's 'New' $14 Billion Field Was Discovered 30 Years Ago. What Took So Long?

Mathieu's quick rise to stardom parallels that of the honey badger, an animal that was little understood until the mid-1990s when Keith and Colleen Begg undertook the first intensive study of it.

WSJ: Tyrann Mathieu, LSU's Honey Badger, Stalks the Heisman