It was a small and peaceful demonstration so I don’t know why there was such a big police presence. It was like using a sledgehammer to crack a nut.这只是个小型的和平示威，真不明白为什么有那么多警察，简直是小题大做。She picked up the sledgehammer and beg...
I used a sledgehammer to drive the pegs into the ground.我用一把大锤子把短桩打进地里。She picked up the sledgehammer and began banging away with enthusiasm.她拿起大锤便用力敲打起来.She hit the nail with a sledgehammer.她用大锤钉钉子....
咖啡因会引起心悸和头痛。Caffeine can cause palpitations and headaches.心悸可能是由于低血糖、咖啡因过量或抽烟过多。The shaking inside may be due to low blood sugar, too much caffeine or too many cigarettes.来自频发的期前搏动或其他心律不齐的心悸亦属常见.Palpitation from frequent...