Teenagers were loitering in the street outside.青少年在外面街上闲荡。He was loitering around the street.他在街上闲逛.If you found someone loitering at the back of your house after dark, you might feel justified in bringing charges agains...
For the time being, however, immunotherapy is still in its experimental stages.但免疫疗法目前仍处于实验阶段。Yesterday he changed his tune, saying the fare increase was experimental.昨天他变卦了，说提价只是试行。They worked hard every day to keep the...