a very small or insignificant amount compared to what is needed
与所需的量相比，非常小或微不足道的数量 (yu suo xu de liang xiang bi, fei chang xiao huo wei bu zu dao de shu liang)
"Our recycling efforts are just a drop in the ocean compared to the global pollution problem."
"与全球污染问题相比，我们的回收努力只是海洋中的一滴水。" (Yu quanqiu wuran wenti xiang bi, women de huishou nuli zhishi **haiyang zhong de yi di shui**.)
used to introduce a balanced or just opinion
to confront a problem or challenge directly and with determi...
to start being broadcast on television or radio
to defend against something or someone
a surprise test given without warning
casual or polite conversation about unimportant topics
