1.appear to 似乎，好像

例句:The terrorists appear to have chosen their targets precisely.
恐怖分子似乎已经明确的选择了他们的目标IxAjd#1Vz%pN!f。

2.health risk 健康风险

例句:Now researchers at university college of london have quantified another health risk for those exposed to secondhandsmoke: mental-health ills.
现在，伦敦大学学院的研究者已经确定了接触二手烟所导致的另一项健康风险心理疾病c.%eS^(KjFzrB。

3.allergic to 对...过敏

例句:He's violently allergic to carrots, peanuts and many other fresh fruits and vegetables. "
艾森伯格对胡萝卜、花生和其他许多种新鲜水果与蔬菜严重过敏WMvJz2&AZ[uZa-。

4.suitable for 适合

例句:These advantages and disadvantages make them more suitable for certain vehicles.
这些优缺点使得它们各更适用于某些汽车mFI]6pszWHRl&y[a_8x。