Scientists say the compound is likely to cause cancer but have no hard scientific proof.

科学家们称这种化合物可能致癌，但是并没有确凿的科学依据。

youdao

This makes it hard to measure how any individual compound might affect the endocrine system.

这就造成困难，很难衡量任何一种化合物到底会如何影响内分泌系统。

youdao

Both situations can be tough to handle but to compound them at the exact same time that was a real hard.

这两种情况每一个都是很难处理的，当它们同时出现的时候，简直太难了！

youdao

Remember how as a kid it was hard to accept compound interest?

FORBES: Digital Rules

The decision came as US officials began to comb through computer hard drives, mobile phones and USB sticks found during the US Navy Seals raid on the compound in Abbottabad where Bin Laden was living.

BBC: Bin Laden death: Images could pose 'US security risk'

From the raid, U.S. forces retrieved 10 hard drives, five computers and more than 100 storage devices containing intelligence from bin Laden's compound, according to a senior U.S. official.

CNN: Bin Laden's death brought 9/11 'closure'