在两方面

老人左右看了看才横过街道。

老人左右看了看才横过街道。

译文一：正由于这种准确度，现在飞机能在10英里宽的空中走廊内，分成两路各自降落，把航线容量扩大了一倍。

但用两种方式你只做了一件事。

但在另外一些国家里却是靠左边(跟中国相反)行驶，这些国家包括英国、日本、泰国、澳大利亚......在穿行马路的时候要看看左右两边。

take one's courage in both hands

both

make both ends meet

boost(increase, raise，or step up) production both intensively and extensively

both parties

be small at both ends and big in the middle; a few at each extreme and many in between

protect the legitimate rights and interests of both consumers and producers

be ready to both serve as an offical and be one of the common people