我们必须将土壤健康视为粮食安全的基础。
The strongest is never strong enough to be always the master unless he transforms strength into right and obedience into duty.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
在商业中,就像在生活中一样,你必须愿意适应才能生存。