總之，易貨貿(mào)易是一種效率很低的交易形式。Overall, barter is a very inefficient means of organizing transactions.試試網(wǎng)球、羽毛球或帆板運(yùn)動(dòng)吧?？傊灰怯刑魬?zhàn)性的。Try tennis, badminton or windsurfing. In short, anything challenging.總之，蘇茜不畏艱難，開朗樂觀、不屈不撓。Above all Sus...