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Even the test ban and a new treaty to cut off production of fissile material—both obvious first steps to a nuclear-free future—will be dogged with difficulty.

即使是禁止核试验和起草一份降低核裂变材料生产的新条约-----很显然，二者都是迈向无核未来的第一步----困难也将会如影随形。

youdao

Annotations can be light or heavy, depending on the reader's purpose and the difficulty of the material.

注释也是可多可少，这取决于读者的想法还是材料的困难程度。

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The survey indicated that those parents who remained jobless - 46% of the households surveyed - continued to experience difficulty in budgeting and sometimes suffered material hardship.

BBC: Working parents are 'in control' says survey

The material belonged to some of the world's leading climate scientists and caused them difficulty just before the major United Nations Copenhagen summit on climate change.

BBC: Climategate: Operation Cabin files released by police