You'll definitely fall about over it.

你一定会捧腹大笑的。

The antics of the monkeys at the zoo made everyone fall about.

动物园中猴子的滑稽动作引得大家捧腹大笑。

Nick's born clown. Just the sight of him is enough to make you fall about laughing.

尼克天生一付丑相，看他一眼就会使你忍不住大笑。

Few people knew that the popular clown who had been making people fall about with laughter was lonely in heart.

几乎没有人知道，那位总让人们开怀大笑的小丑内心很孤独。

Ms. Mak, the HSBC analyst, is forecasting that spot coal prices will fall about 20% in coming months, resulting in a 25% spot-price increase for all of 2008 from last year.

汇丰分析师马克预计，煤炭现货价格在接下来的几个月中将回落大约20%，2008年煤炭现货价格因此将较上年上涨25%。