The experimented vaccine seems to have both desirable and detrimental effects on the subject’s immune system.

The Extension Program first established in 1873 at Cambridge University has successfully withstood changing popular trends.

Many people criticized the ostentatious lifestyle of some high-ranked officials.

Only aggressive species of small animal life are likely to survive in the rough waters nears shallow coral reefs.

Parents play a crucial role in a child's upbringing in the formative years. They are really the driving force behind whatever the children do.

The works of such men as the English philosophers John Locke and Thomas Hobbes helped pave the way for academic freedom in the modern sense.

When two people get married, it is with the assumption that their feelings for each other are immutable and will never alter.

The expression “out of the frying pan and into the fire” means to go from one dilemma to a worse one.

In the past, women have confined to the domestic sphere.

Many people say that assembly-line jobs are monotonous and unrewarding.

My head teacher has grave doubts as to whether I would pass my university entrance

examination. I myself feel so worried.

The atomic bomb annihilated the whole city, so nothing was left standing.