... concentrate on…集中注意力于。。。 be used without caution可被放心使用 conduct a study/survey开展研究/调查 ...
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New digital mobile phones produce less radiation, but that does not necessarily mean that they should be used without caution.
虽然新型数字手机产生的辐射较少，但这并非意味着使用时就可以无所顾忌。
These medications should be used with extreme caution, as it is best if you train your body to fall asleep without additional aid.
这些安眠药必须谨慎使用，随着你可以很好的控制入睡就无需服用了。
Fats without a stabilizer should be used with extreme caution.
需谨慎使用未加稳定剂的脂肪。
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